+9+7(4)(-2)(-1)=

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Solution for +9+7(4)(-2)(-1)= equation:


+9+7(4)(-2)(-1)=0

We simplify the equation to the form, which is simple to understand 
+9+7(4)*(-2)*(-1)=0

Reorder the terms in parentheses
multiplication of parentheses
+9+7*(-8)*(-1)=0



Reorder the terms in parentheses
multiplication of parentheses
+9+7*(+8)=0



Reorder the terms in parentheses
+9+(+56)=0

Remove unnecessary parentheses
+9+56=0

We move all terms containing  to the left and all other terms to the right. 
0=0-9-56

We simplify left and right side of the equation. 
0=-65

0=-65

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

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