257-(3x+25)=157
x-140:35=270
23-(x:13)=18
9(x+5)-13=671
9(4x)-13=24
(x-5)-34:17=1
.(2x-7). 3=3 dấu chấm là nhân nhé
(3x-5):2=4.5
9.(x+3)-20=5+4.5
70-(2x-50)=0
8.5-(x+7)=3.10
17-(x:12)=17
32.9-8x=100.2
9.(x+5)-13=671
5.(x+5)-2.24=2.26
4.(x+1)-28=3.4
giúp mk mk tích cho
\(257-\left(3x+25\right)=157\)
\(3x+25=257-157\)
\(3x+25=100\)
\(3x=75\)
\(x=25\)
vay \(x=25\)
\(x-140:35=270\)
\(x-4=270\)
\(x=274\)
vay \(x=274\)
\(23-\left(x:13\right)=18\)
\(\frac{x}{13}=5\)
\(\frac{x}{13}=\frac{65}{13}\)
\(\Rightarrow x=65\)
vay \(x=65\)
\(9\left(x+5\right)-13=671\)
\(9x+45=684\)
\(9x=639\)
\(x=71\)
vay \(x=71\)
\(9\left(4x\right)-13=24\)
\(36x=37\)
\(x=\frac{37}{36}\)
vay \(x=\frac{37}{36}\)
\(\left(x-5\right)-34:17=1\)
\(\left(x-5\right)-2=1\)
\(x-5=3\)
\(x=8\)
vay \(x=8\)
\(\left(2x-7\right).3=3\)
\(2x-7=1\)
\(2x=8\)
\(x=4\)
vay \(x=4\)
\(\left(3x-5\right):2=4.5\)
\(\left(3x-5\right):2=20\)
\(3x-5=10\)
\(3x=15\)
\(x=5\)
vay \(x=5\)
con lai lam tuong tu
mk moi tay roi nen ban tu lam vay
bạn làm tiếp thì mk đánh 2 tích nữa