Question

tìm x,biết

-5(x+1/5)-1/2(x-2/3)=3/2x-5/6

giải giúp mik với ạ !

Answer 1

`-5(x+1/5)-1/2(x-2/3)=3/2x-5/6`

`-5x-1-1/2x+1/3=3/2x-5/6`

`-5x-1/2x-3/2x=-5/6+1-1/3`

`(-5-1/2-3/2)x=-1/6`

`-7x=-1/6`

`x=-1/6:(-7)`

`x=1/42`

Answer 2

Answer 3

`-5(x + 1/5) - 1/2 (x - 2/3) = 3/2x - 5/6`

`=> -5x + -1 - 1/2x - 1/3 = 3/2x - 5/6`

`=> (-5x - 1/2x - 3/2x) = -5/6 + -1/3 + 1`

`=> (-7x)        = -1/6`

`=>     x          = (-1/6) : (-7)`

`=>     x          = 1/42`