30-(-12)=

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Solution for 30-(-12)= equation:


30-(-12)=0

We simplify the equation to the form, which is simple to understand 
30-(-12)=0

Remove unnecessary parentheses
30+12=0

We move all terms containing  to the left and all other terms to the right. 
0=0-30-12

We simplify left and right side of the equation. 
0=-42

0=-42

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

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