Question

a) 0,5.x-2/3.(x+1) = -1/12 Ai nhanh tớ sẽ tick

Answer 1

`0,5.x - 2/3.(x+1) = -1/12`

`=> 1/2.x - 2/3 . x - 2/3 = -1/12`

`=> (1/2 - 2/3) . x  = -1/12+ 2/3`

`=> -1/6 . x  = 7/12`

`=> x = 7/12 : (-1/6)`

`=> x = -7/2`

Vậy `x=-7/2`

 

Answer 2

\(0,5x-\dfrac{2}{3}\left(x+1\right)=-\dfrac{1}{12}\)

=>\(\dfrac{1}{2}x-\dfrac{2}{3}x-\dfrac{2}{3}=-\dfrac{1}{12}\)

=>\(-\dfrac{1}{6}x=-\dfrac{1}{12}+\dfrac{2}{3}=\dfrac{8}{12}-\dfrac{1}{12}=\dfrac{7}{12}\)

=>\(x=\dfrac{7}{12}:\dfrac{-1}{6}=\dfrac{7}{12}\cdot\left(-6\right)=-\dfrac{7}{2}\)