-4*-4-11=4*-4+21

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Solution for -4*-4-11=4*-4+21 equation: 


Simplifying
-4 * -4 + -11 = 4 * -4 + 21

Multiply -4 * -4
16 + -11 = 4 * -4 + 21

Combine like terms: 16 + -11 = 5
5 = 4 * -4 + 21

Multiply 4 * -4
5 = -16 + 21

Combine like terms: -16 + 21 = 5
5 = 5

Add '-5' to each side of the equation.
5 + -5 = 5 + -5

Combine like terms: 5 + -5 = 0
0 = 5 + -5

Combine like terms: 5 + -5 = 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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