Question

c) \(\dfrac{9}{8}\)  - 25%x = -3                  d)  \(\dfrac{3}{8}\)x - \(\left(\dfrac{-4}{3}+x\right)\)= \(\dfrac{-13}{9}\)

Answer 1

`c)9/8-25%.x=-3`

`9/8-1/4x=-3`

`1/4x=9/8-(-3)=33/8`

`x=33/8:1/4=33/2`

`d)3/8x-([-4]/3+x)=[-13]/9`

`3/8x+4/3-x=[-13]/9`

`3/8x-x=[-13]/9-4/3`

`(3/8-1)x=-25/9`

`-5/8x=-25/9`

`x=-25/9:(-5/8)=40/8`

Answer 2

\(-\dfrac{1}{4}x=-3-\dfrac{9}{8}\\ -\dfrac{1}{4}x=-\dfrac{33}{8}\\ x=\dfrac{33}{2}\)

b,  

\(\dfrac{3}{8}x+\dfrac{4}{3}-x=-\dfrac{13}{9}\\ -\dfrac{5}{8}x+\dfrac{4}{3}=-\dfrac{13}{9}\\ -\dfrac{5}{8}x=-\dfrac{13}{9}-\dfrac{4}{3}\\ -\dfrac{5}{8}x=-\dfrac{25}{9}\\ x=\dfrac{40}{9}\)

Answer 3

` 9/8 - 25%x = -3`

` 9/8 - 1/4x = -3`

` 1/4x = 9/8 - (-3)`

`1/4 x = 9/8 + 3`

`1/4x = 33/8`

`x = 33/8 : 1/4`

` x = 33/8 xx 4`

` x = 33/2`

 

`3/8x - (-4/3 +x) = -13/9`

`3/8 x + 4/3 -x = -13/9`

`3/8 x - x = -13/9 - 4/3`

`3/8x - x = -25/9`

`x.(3/8 - 1) = -25/9`

` x. (-5/8) = -25/9`

`x = -25/9 : (-5/8)`

` x = -25/9 xx (8/-5)`

`x= 40/9`

Answer 4

dấu j chỗ `9/8 3/8` vậy bạn ?