4(7-8)=20

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Solution for 4(7-8)=20 equation: 


Simplifying
4(7 + -8) = 20

Combine like terms: 7 + -8 = -1
4(-1) = 20

Multiply 4 * -1
-4 = 20

Solving
-4 = 20

Couldn't find a variable to solve for.

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

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