x(7)+7=-1(9)

Solution for x(7)+7=-1(9) equation:

x(7)+7=-1(9)

We simplify the equation to the form, which is simple to understand 
x(7)+7=-1(9)

Reorder the terms in parentheses
+(+7x)+7=-1*(9)

Remove unnecessary parentheses
+7x+7=-1+*(+9+)

Reorder the terms in parentheses
+7x+7=+(-9)

Remove unnecessary parentheses
+7x+7=-9

We move all terms containing x to the left and all other terms to the right. 
+7x=-9-7

We simplify left and right side of the equation. 
+7x=-16

We divide both sides of the equation by 7 to get x. 
x=-2.28571428571