12-(-5-7)+45=

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Solution for 12-(-5-7)+45= equation:


12-(-5-7)+45=0

We simplify the equation to the form, which is simple to understand 
12-(-5-7)+45=0

Simplifying terms in parentheses
12-(-12)+45=0

Remove unnecessary parentheses
12+12+45=0

We move all terms containing  to the left and all other terms to the right. 
0=0-12-12-45

We simplify left and right side of the equation. 
0=-69

0=-69

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

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