Question 875845
-( 1+ 7x)- 6(-7-x) = 36

To solve for x , 

-( 1+ 7x) - 6( -7-x) = 36
- 1 - 7x + 42 + 6 x  = 36
- x + 41             = 36
-x                   = -5
x                    = 5

To check :

-( 1+ 7*5) - 6(-7-5) = 36
-( 1+ 35)  + 42 + 30 = 36
-1 -35 + 42 +30      = 36
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