(-4)(-9)=

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Solution for (-4)(-9)= equation:


(-4)(-9)=0

We simplify the equation to the form, which is simple to understand 
(-4)*(-9)=0

Reorder the terms in parentheses
multiplication of parentheses
(+36)=0



Remove unnecessary parentheses
+36=0

We move all terms containing  to the left and all other terms to the right. 
0=0-36

We simplify left and right side of the equation. 
0=-36

0=-36

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

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