-42+20=20-(-4)

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Solution for -42+20=20-(-4) equation:


-42+20=20-(-4)

We simplify the equation to the form, which is simple to understand 
-42+20=20-(-4)

Remove unnecessary parentheses
-42+20=20+4

We move all terms containing  to the left and all other terms to the right. 
0=+20+4+42-20

We simplify left and right side of the equation. 
0=+46

0=46

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

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