4*5-4=

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Solution for 4*5-4= equation: 


Simplifying
4 * 5 + -4 = 0

Multiply 4 * 5
20 + -4 = 0

Combine like terms: 20 + -4 = 16
16 = 0

Solving
16 = 0

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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