43 : 8 . 32 - 52 + 9
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TP
3
C
1 tháng 1
22 x 43 - 625 : {[504 - (52 x 8 + 70) : 32 + 6] : 20 + 20230}
= 4 x 64 - 625 : {[504 - (25 x 8 + 70) : 9 + 6] : 20 + 1}
= 256 - 625 : {[504 - (200 + 70) : 9 + 6] : 20 + 1}
= 256 - 625 : {[504 - 270 : 9 + 6] : 20 + 1}
= 256 - 625 : {[504 - 30 + 6] : 20 + 1}
= 256 - 625 : {[474 + 6] : 20 + 1]
= 256 - 625 : {480 : 20 + 1]
= 256 - 625 : {24 + 1}
= 256 - 625 : 25
= 256 - 41
= 215
1 tháng 1
22 x 43 - 625 : {[504 - (52 x 8 + 70) : 32 + 6] : 20 + 20230}
= 4 x 64 - 625 : {[504 - (25 x 8 + 70) : 9 + 6] : 20 + 1}
= 256 - 625 : {[504 - (200 + 70) : 9 + 6] : 20 + 1}
= 256 - 625 : {[504 - 270 : 9 + 6] : 20 + 1}
= 256 - 625 : {[504 - 30 + 6] : 20 + 1}
= 256 - 625 : {[474 + 6] : 20 + 1]
= 256 - 625 : {480 : 20 + 1]
= 256 - 625 : {24 + 1}
= 256 - 625 : 25
= 256 - 41
= 215
T
14 tháng 12 2023
a. - 7 - 9 = - (7 + 9) = - 16
b. - 15 - 8 = - (15 + 8) = - 23
c. - 28 - 32 = - (28 + 32) = - 60
d. - 43 - 32 = - (43 + 32) = - 75
e. - 5 - 9 - 11
= - (5 + 9 + 11)
= - (14 + 11)
= - 25
f. - 6 - 8 - 13
= - (6 + 8 + 13)
= - (14 + 13)
= - 27
g. - 3 - 7 - 25
= - (3 + 7 + 25)
= - (10 + 25)
= - 35
h. - 7 - 4 - 15
= - (7 + 4 + 15)
= - (11 + 15)
= - 26
20 tháng 10 2023
\(=60-\dfrac{\left[36+64\right]}{25}\)
\(=60-4=56\)
H9
HT.Phong (9A5)
CTVHS
10 tháng 10 2023
\(5x+2x\cdot\left(2^3\cdot5-3^2\cdot4\right)+5^2=4^3\)
\(\Rightarrow5x+2x\cdot\left(8\cdot5-9\cdot4\right)+25=64\)
\(\Rightarrow5x+2x\cdot\left(40-36\right)=64-25\)
\(\Rightarrow5x+2x\cdot4=39\)
\(\Rightarrow5x+8x=39\)
\(\Rightarrow x\cdot\left(5+8\right)=39\)
\(\Rightarrow13x=39\)
\(\Rightarrow x=\dfrac{39}{13}\)
\(\Rightarrow x=3\)
Vậy: ...
6 tháng 8 2021
a) 5.22 + (x + 3) = 52
5.4 + (x + 3) = 25
20 + (x + 3) = 25
x + 3 = 25 – 20
x + 3 = 5
x = 5 – 3 = 2
b) 23 + (x – 32) = 53 - 43
8 + (x – 9) = 125 – 64
8 + (x – 9) = 61
x – 9 = 61 – 8
x – 9 = 53
x = 53 + 9 = 62
NT
6 tháng 8 2021
a) \(5.2^2+\left(x+3\right)=5^2\)
\(x+3=5^2-5.2^2\)
\(x+3=25-20\)
\(x+3=5\)
\(x=2\)
b) \(2^3+\left(x-3^2\right)=5^3-4^3\)
\(8+\left(x-9\right)=125-64\)
\(x-9=53\)
\(x=62\)
VN
Võ Ngọc Phương
VIP
5 tháng 8 2023
1. \(x-8+32=68\)
\(x-8=68-32\)
\(x-8=36\)
\(x=36+8\)
\(x=44\)
_____
2. \(x+8+32=68\)
\(x+8=68-32\)
\(x+8=36\)
\(x=36-8\)
\(x=28\)
_____
3. \(98-x+34=43\)
\(98-x=43-34\)
\(98-x=9\)
\(x=98-9\)
\(x=89\)
_____
4. \(98+x-34=43\)
\(98+x=43+34\)
\(98+x=77\)
\(x=77-98\)
\(x=-21\)
_____
5. \(x:5:4=800\)
\(x:5=800.4\)
\(x:5=3200\)
\(x=3200.5\)
\(x=16000\)
_____
6. \(18+x=384:8\)
\(18+x=48\)
\(x=48-18\)
\(x=30\)
_____
7. \(\left(84,6-2\times x\right):3,02=5,1\)
\(84,6-2.x=5,1.3,02\)
\(84,6-2.x=15,402\)
\(2.x=84,6-15,402\)
\(2.x=69,198\)
\(x=69,198:2\)
\(x=34,599\)
_____
8. \(x\times5=120:6\)
\(x.5=20\)
\(x=20:5\)
\(x=4\)
_____
9. \(\left(15\times24-x\right):0,25=100:0,25\)
\(\left(15.24-x\right):0,25=400\)
\(15.24-x=400.0,25\)
\(15.24-x=100\)
\(360-x=100\)
\(x=360-100\)
\(x=260\)
5 tháng 8 2023
1,x-8+32=68
=>x-8=68-32=36
=>x=36+8=42
2,x+8+32=68
=>x+8=68-32=36
=>x=36-8=28
3,98-x+34=43
=>98-x=43-34=9
=>x=98-9=89
4,98+x-34=43
=>98+x=43+34=77
=>x=77-98=-21
5,x:5:4=800
=>x:20=800
=>x=800x20=16000
6,18+x=384:8=48
=>x=48-18=30
7,(84,6-2x):3,02=5,1
=>84,6-2x=5,1x3,02=15,402
=>2x=84,6-15,402=69,198
=>x=69,198:2=34,599
8,5x=120:6=20
=>x=20:5=4
9,(15x24-x):0,25=100:0,25=400
=>360-x=400x0,25=100
=>x=360-100=260.
H9
HT.Phong (9A5)
CTVHS
26 tháng 10 2023
a) \(x+5=20-\left(12-7\right)\)
\(\Rightarrow x+5=20-5\)
\(\Rightarrow x+5=15\)
\(\Rightarrow x=15-5\)
\(\Rightarrow x=10\)
b) \(15-\left(3+2x\right)=2^2\)
\(\Rightarrow3+2x=15-4\)
\(\Rightarrow3+2x=11\)
\(\Rightarrow2x=11-3\)
\(\Rightarrow2x=8\)
\(\Rightarrow x=\dfrac{8}{2}\)
\(\Rightarrow x=4\)
c) \(-11-\left(19-x\right)=50\)
\(\Rightarrow19-x=-11-50\)
\(\Rightarrow19-x=-61\)
\(\Rightarrow x=61+19\)
\(\Rightarrow x=80\)
d) \(159-\left(25-x\right)=43\)
\(\Rightarrow25-x=159-43\)
\(\Rightarrow25-x=116\)
\(\Rightarrow x=25-116\)
\(\Rightarrow x=-91\)
e) \(\left(79-x\right)-43=-\left(17-52\right)\)
\(\Rightarrow\left(79-x\right)-43=52-17\)
\(\Rightarrow79-x-43=35\)
\(\Rightarrow36-x=35\)
\(\Rightarrow x=1\)
f) \(\left(7+x\right)-\left(21-13\right)=32\)
\(\Rightarrow7+x-8=32\)
\(\Rightarrow x-1=32\)
\(\Rightarrow x=32+1\)
\(\Rightarrow x=33\)
g) \(-x+20=-15+8+13\)
\(\Rightarrow-x+20=6\)
\(\Rightarrow x=20-6\)
\(\Rightarrow x=14\)
h) \(-\left(-x+13-142\right)+18=55\)
\(\Rightarrow x-13+142+18=55\)
\(\Rightarrow x+147=55\)
\(\Rightarrow x=55-147\)
\(\Rightarrow x=-92\)
`4^3:8.3^2-5^2+9`
`=64.8.9-25+9`
`=512.9-25+9`
`=4608-25+9`
`=4583+9`
`=4592`
=64:8.9-25+9
=72-25+9
=47+9
=56