Question

2x - 2/3 + 1/2x = -1

31/36 - (1/3 - x)² = 5/6

Answer 1

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

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

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

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

`=> x=-1/3 : 5/2`

`=>x= -2/15`

`31/36 - (1/3-x)^2 =5/6`

`=>  (1/3-x)^2 = 31/36 - 5/6`

`=>  (1/3-x)^2 =1/36`

`=>  (1/3-x)^2 = (+-1/6)^2`

\(\Rightarrow\left[{}\begin{matrix}\dfrac{1}{3}-x=\dfrac{1}{6}\\\dfrac{1}{3}-x=-\dfrac{1}{6}\end{matrix}\right.\)

\(\Rightarrow\left[{}\begin{matrix}x=\dfrac{1}{6}\\x=\dfrac{1}{2}\end{matrix}\right.\)

Answer 2