3(3y+7)-9y=21

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Solution for 3(3y+7)-9y=21 equation: 


Simplifying
3(3y + 7) + -9y = 21

Reorder the terms:
3(7 + 3y) + -9y = 21
(7 * 3 + 3y * 3) + -9y = 21
(21 + 9y) + -9y = 21

Combine like terms: 9y + -9y = 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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