Question

(15 - x)+ (x + 12)= 7- (-5 + x)

Answer 1

`(15-x)+(x+12)=7-(-5+x)`

`15-x+x+12=7+5-x`

`-x+x+x=7+5-15-12`

`x=-15`

Answer 2

(15 - x) + ( x+ 12)= 7- ( -5 + x )

15 - x + x + 12 = 7+ 5 - x

2x + (-x) = 7 + 5 - 15 -12

x= -15

 

Answer 3

\(\left(15-x\right)+\left(x+12\right)=7-\left(-5+x\right)\) 

      \(15-x+x+12=7+5-x\) 

            \(-x+x+x=7+5-15-12\) 

                            \(x=-15\)