(-7)(-8)=

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Solution for (-7)(-8)= equation:


(-7)(-8)=0

We simplify the equation to the form, which is simple to understand 
(-7)*(-8)=0

Reorder the terms in parentheses
multiplication of parentheses
(+56)=0



Remove unnecessary parentheses
+56=0

We move all terms containing  to the left and all other terms to the right. 
0=0-56

We simplify left and right side of the equation. 
0=-56

0=-56

The left and right sides are not equal, therefore there is no solution. This equation is invalid.

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