3y+9-y=7+y+9

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Solution for 3y+9-y=7+y+9 equation:


Simplifying
3y + 9 + -1y = 7 + y + 9

Reorder the terms:
9 + 3y + -1y = 7 + y + 9

Combine like terms: 3y + -1y = 2y
9 + 2y = 7 + y + 9

Reorder the terms:
9 + 2y = 7 + 9 + y

Combine like terms: 7 + 9 = 16
9 + 2y = 16 + y

Solving
9 + 2y = 16 + y

Solving for variable 'y'.

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

Add '-1y' to each side of the equation.
9 + 2y + -1y = 16 + y + -1y

Combine like terms: 2y + -1y = 1y
9 + 1y = 16 + y + -1y

Combine like terms: y + -1y = 0
9 + 1y = 16 + 0
9 + 1y = 16

Add '-9' to each side of the equation.
9 + -9 + 1y = 16 + -9

Combine like terms: 9 + -9 = 0
0 + 1y = 16 + -9
1y = 16 + -9

Combine like terms: 16 + -9 = 7
1y = 7

Divide each side by '1'.
y = 7

Simplifying
y = 7

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