-42-(-30)=

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Solution for -42-(-30)= equation:


-42-(-30)=0

We simplify the equation to the form, which is simple to understand 
-42-(-30)=0

Remove unnecessary parentheses
-42+30=0

We move all terms containing  to the left and all other terms to the right. 
0=0+42-30

We simplify left and right side of the equation. 
0=+12

0=12

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

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