7(3y-9)=21y-63

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Solution for 7(3y-9)=21y-63 equation:


Simplifying
7(3y + -9) = 21y + -63

Reorder the terms:
7(-9 + 3y) = 21y + -63
(-9 * 7 + 3y * 7) = 21y + -63
(-63 + 21y) = 21y + -63

Reorder the terms:
-63 + 21y = -63 + 21y

Add '63' to each side of the equation.
-63 + 63 + 21y = -63 + 63 + 21y

Combine like terms: -63 + 63 = 0
0 + 21y = -63 + 63 + 21y
21y = -63 + 63 + 21y

Combine like terms: -63 + 63 = 0
21y = 0 + 21y
21y = 21y

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

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

Combine like terms: 21y + -21y = 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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