9(y+1)=5y+21

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Solution for 9(y+1)=5y+21 equation:


Simplifying
9(y + 1) = 5y + 21

Reorder the terms:
9(1 + y) = 5y + 21
(1 * 9 + y * 9) = 5y + 21
(9 + 9y) = 5y + 21

Reorder the terms:
9 + 9y = 21 + 5y

Solving
9 + 9y = 21 + 5y

Solving for variable 'y'.

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

Add '-5y' to each side of the equation.
9 + 9y + -5y = 21 + 5y + -5y

Combine like terms: 9y + -5y = 4y
9 + 4y = 21 + 5y + -5y

Combine like terms: 5y + -5y = 0
9 + 4y = 21 + 0
9 + 4y = 21

Add '-9' to each side of the equation.
9 + -9 + 4y = 21 + -9

Combine like terms: 9 + -9 = 0
0 + 4y = 21 + -9
4y = 21 + -9

Combine like terms: 21 + -9 = 12
4y = 12

Divide each side by '4'.
y = 3

Simplifying
y = 3

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