Question

giúp em với ạ nếu đc em cảm ơn nhiều lắm ạ

Answer 1

a: \(\dfrac{x-1}{4}=\dfrac{-7}{2}\)

=>x-1=-14

hay x=-13

d: \(\dfrac{2x-3}{8}=\dfrac{17}{-4}\)

=>2x-3=-34

=>2x=-31

hay x=-31/2

c: \(\dfrac{x+2}{4}=\dfrac{x-1}{3}\)

=>4x-4=3x+6

=>x=10

Answer 2

chụp hình dethw quá^^

a ) 

\(\dfrac{x-1}{4}=-\dfrac{7}{2}\)

=> \(x-1=-\dfrac{7}{2}\times4=-14\)

=> x = - 14 + 1 =  -13

Answer 3

`d)`\(\dfrac{2x-3}{8}=\dfrac{17}{4}\)

`=>4(2x-3)=136`

`=>2x-3=34`

`=>2x=37`

`=>x=37/2`

`e)`\(\dfrac{2\left(x-1\right)}{3}=\dfrac{x+5}{2}\)

`=>4(x-1)=3(x+5)`

`=>4x-4=3x+15`

`=>x=19`

`f)`\(\dfrac{6-x}{7}=\dfrac{x+8}{-6}\)

`=>-6(6-x)=7(x+8)`

`=>-36+6x=7x+56`

`=>x=-92`