3y+9-y=8+y+7

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Solution for 3y+9-y=8+y+7 equation:


Simplifying
3y + 9 + -1y = 8 + y + 7

Reorder the terms:
9 + 3y + -1y = 8 + y + 7

Combine like terms: 3y + -1y = 2y
9 + 2y = 8 + y + 7

Reorder the terms:
9 + 2y = 8 + 7 + y

Combine like terms: 8 + 7 = 15
9 + 2y = 15 + y

Solving
9 + 2y = 15 + 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 = 15 + y + -1y

Combine like terms: 2y + -1y = 1y
9 + 1y = 15 + y + -1y

Combine like terms: y + -1y = 0
9 + 1y = 15 + 0
9 + 1y = 15

Add '-9' to each side of the equation.
9 + -9 + 1y = 15 + -9

Combine like terms: 9 + -9 = 0
0 + 1y = 15 + -9
1y = 15 + -9

Combine like terms: 15 + -9 = 6
1y = 6

Divide each side by '1'.
y = 6

Simplifying
y = 6

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