(117+30)*x=882:2
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a) 10*(x-1)=15-5
10*(x-1)=10
(x-1)=10:10
(x-1)=1
x=1+1
x=2
b) x+1+x+2+x+3=18
3x+6=18
3x=18-6
3x=12
x=12:3
x=4
c) 17+2*(x+2)=25
2*(x+2)=25-17
2*(x+2)=8
x+2=8:2
x+2=4
x=4-2
x=2
d) x:17=82-17+26
x:17=91
x=91*17
x=1547
e) 147*x=441
x=441:147
x=3
g)(x:81)=330:10:11
(x:81)=3
x=3*81
x=243
i)x+1+x+2+x+3+x+4+x+5=40
5x+15=40
5x=40-15
5x=25
x=5
Ủng hộ nha
bạn làm sao ấy đề mink viet khac ma ban vite mot neo
\(1) 420+65.4=(x+175):5+30\)
\(\implies 420+260=(x+175):5+30\)
\(\implies 680=(x+175):5+30\)
\(\implies 650=(x+175):5\)
\(\implies 650.5-175=x\)
\(\implies 3075=x\)
\(2)x-4867=(175.2050.70):25+23\)
\(\implies x-4867=1004500+23\)
\(\implies x-4867=1004523\)
\(\implies x=1009390\)
\(3) 134-[(96-7x):4-2]=126\)
\(\implies (96-7x):4-2=8\)
\(\implies(96-7x):4=10\)
\(\implies 96-7x=40\)
\(\implies 7x=56\)
\(\implies x=8\)
\(4) 4-\{100-[(100-5x):8-5]:10\}:25=0\)
\(\implies 4-\{100-[(100-5x):8-5]:10\}=0\)
\(\implies 100-[(100-5x):8-5]:10=4\)
\(\implies 100-[(100-5x):8-5]=40\)
\(\implies (100-5x):8-5=60\)
\(\implies (100-5x):8=65\)
\(\implies 100-5x=520\)
\(\implies 5x=-420\)
\(\implies x=-84\)
~ Hok tốt a~
882:(2x-15)=18
2x-15=882:18
2x-15=49
2x=49+15
2x=64
x=32
k mk nha
mk nhanh nhất
X : (882 - 490 +98 ) = 10
X : 490 = 10
X = 10 x 490
X = 9400
Trả lời
1)17-2(2x-3)=3
2(2x-3)=17-3
2(2x-3)=14
2x-3 =14:2
2x-3 =7
2x =7+3
2x =10
x =10:2
x =5
1) 17 - 2(2x - 3) = 3
=> 17 - 4x + 6 = 3
=> 23 - 4x = 3
=> 4x = 23 - 3
=> 4x = 20
=> x = 20 : 4 = 5
2) 125 - 5(3x - 1) = 25
=> 125 - 15x + 5 = 25
=> 130 - 15x = 25
=> 15x = 130 - 25
=> 15x = 105
=> x = 105 : 15
=> x = 7
3) 70 - 5(2x - 3) = 45
=> 70 - 10x + 15 = 45
=> 85 - 10x = 45
=> 10x = 85 - 45
=> 10x = 40
=> x = 40 : 10
=> x = 4
4) 231 - (x - 6) = 133 : 13
=> 231 - x + 6 = 133/13
=> 237 - x = 133/13
=> x = 237 - 133/13
=> x = 2948/13
a: =22+25,5=47,5
b: =-9,207-1,505+3,8-2,8=1-10,712=-9,712
c: \(=2,07+3,005-12,005+4,23=6,3-9=-2,7\)
e: =3,58(24,45+75,55)=3,58*100=358
\(\left(117+30\right)\cdot x=882:2\)
\(147\cdot x=441\)
\(x=441:147\)
\(x=3.\)
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