21+27=28+20

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Solution for 21+27=28+20 equation: 


Simplifying
21 + 27 = 28 + 20

Combine like terms: 21 + 27 = 48
48 = 28 + 20

Combine like terms: 28 + 20 = 48
48 = 48

Add '-48' to each side of the equation.
48 + -48 = 48 + -48

Combine like terms: 48 + -48 = 0
0 = 48 + -48

Combine like terms: 48 + -48 = 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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