4(9+-7)+12=20

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Solution for 4(9+-7)+12=20 equation: 


Simplifying
4(9 + -7) + 12 = 20

Combine like terms: 9 + -7 = 2
4(2) + 12 = 20

Multiply 4 * 2
8 + 12 = 20

Combine like terms: 8 + 12 = 20
20 = 20

Add '-20' to each side of the equation.
20 + -20 = 20 + -20

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

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

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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