Question

\(\dfrac{3}{7}x-\dfrac{2}{3}x=\dfrac{10}{21}\)

Answer 1

`3/7 x -2/3 x =10/21`

`=> (3/7-2/3)x=10/21`

`=> ( 9/21 - 14/21)x=10/21`

`=>-5/21 x=10/21`

`=> x=10/21 : (-5/21)`

`=> x=10/21 xx (-21/5)`

`=>x=-2`

Answer 2

(3/7 - 2/3).x = 10/21

-5/21.x = 10/21

x = 10/21 : (-5/21) 

x = -2

vậy x = -2