(21-8y)+8y=21

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Solution for (21-8y)+8y=21 equation: 


Simplifying
(21 + -8y) + 8y = 21

Remove parenthesis around (21 + -8y)
21 + -8y + 8y = 21

Combine like terms: -8y + 8y = 0
21 + 0 = 21
21 = 21

Add '-21' to each side of the equation.
21 + -21 = 21 + -21

Combine like terms: 21 + -21 = 0
0 = 21 + -21

Combine like terms: 21 + -21 = 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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