(-7)+(-2)-(-8)-(-9)=

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Solution for (-7)+(-2)-(-8)-(-9)= equation:


(-7)+(-2)-(-8)-(-9)=0

We simplify the equation to the form, which is simple to understand 
(-7)+(-2)-(-8)-(-9)=0

Remove unnecessary parentheses
-7+(-2)-(-8)-(-9)=0

Remove unnecessary parentheses
-7-2-(-8+)-(-9+)=0

Remove unnecessary parentheses
-7-2+8-(-9)=0

Remove unnecessary parentheses
-7-2+8+9=0

We move all terms containing  to the left and all other terms to the right. 
0=0+7+2-8-9

We simplify left and right side of the equation. 
0=-8

0=-8

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

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