Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
\(1) 420+65.4=(x+175):5+30\)
\(\implies 420+260=(x+175):5+30\)
\(\implies 680=(x+175):5+30\)
\(\implies 650=(x+175):5\)
\(\implies 650.5-175=x\)
\(\implies 3075=x\)
\(2)x-4867=(175.2050.70):25+23\)
\(\implies x-4867=1004500+23\)
\(\implies x-4867=1004523\)
\(\implies x=1009390\)
\(3) 134-[(96-7x):4-2]=126\)
\(\implies (96-7x):4-2=8\)
\(\implies(96-7x):4=10\)
\(\implies 96-7x=40\)
\(\implies 7x=56\)
\(\implies x=8\)
\(4) 4-\{100-[(100-5x):8-5]:10\}:25=0\)
\(\implies 4-\{100-[(100-5x):8-5]:10\}=0\)
\(\implies 100-[(100-5x):8-5]:10=4\)
\(\implies 100-[(100-5x):8-5]=40\)
\(\implies (100-5x):8-5=60\)
\(\implies (100-5x):8=65\)
\(\implies 100-5x=520\)
\(\implies 5x=-420\)
\(\implies x=-84\)
~ Hok tốt a~
\(\left(117+30\right)\cdot x=882:2\)
\(147\cdot x=441\)
\(x=441:147\)
\(x=3.\)
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
17,75-(0,5×x:2-4,2)=15
0,5×x:2-4,2=17,75-15
0,5×x:2-4,2=2,75
0,5×x:2=2,75+4,2
0,5:2×x=6,95
0,25×x=6,95
x=6,95:0,25
x=27,8
Vậy \(x=27,8\)
950 : x = 76
x = 950 : 76
x = 12,5
77,9 : x = 82
x = 77,9 : 82
x = 0,95
1.
7/15:(1/2-9/10xX)-1/6=13/6
=>7/15:(1/2-9/10xX)=13/6+1/6
=>7/16:(1/2-9/10xX)=7/3
=>1/2-9/10xX=7/16:7/3
=>1/2-9/10xX=3/16
=>9/10xX=1/2-3/16
=>9/10xX=5/16
=>X=5/16:9/10
=>X=25/72
882:(2x-15)=18
2x-15=882:18
2x-15=49
2x=49+15
2x=64
x=32
k mk nha
mk nhanh nhất
882;(2.x-15)=18
2.x-15=822:18=49
2.x=49+15=64
x=64:2=32