7(y+3)=9y+21

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


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

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

Reorder the terms:
21 + 7y = 21 + 9y

Add '-21' to each side of the equation.
21 + -21 + 7y = 21 + -21 + 9y

Combine like terms: 21 + -21 = 0
0 + 7y = 21 + -21 + 9y
7y = 21 + -21 + 9y

Combine like terms: 21 + -21 = 0
7y = 0 + 9y
7y = 9y

Solving
7y = 9y

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '-9y' to each side of the equation.
7y + -9y = 9y + -9y

Combine like terms: 7y + -9y = -2y
-2y = 9y + -9y

Combine like terms: 9y + -9y = 0
-2y = 0

Divide each side by '-2'.
y = 0

Simplifying
y = 0

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