9-3y+4y-4y+9+7y=

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Solution for 9-3y+4y-4y+9+7y= equation: 


Simplifying
9 + -3y + 4y + -4y + 9 + 7y = 0

Reorder the terms:
9 + 9 + -3y + 4y + -4y + 7y = 0

Combine like terms: 9 + 9 = 18
18 + -3y + 4y + -4y + 7y = 0

Combine like terms: -3y + 4y = 1y
18 + 1y + -4y + 7y = 0

Combine like terms: 1y + -4y = -3y
18 + -3y + 7y = 0

Combine like terms: -3y + 7y = 4y
18 + 4y = 0

Solving
18 + 4y = 0

Solving for variable 'y'.

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

Add '-18' to each side of the equation.
18 + -18 + 4y = 0 + -18

Combine like terms: 18 + -18 = 0
0 + 4y = 0 + -18
4y = 0 + -18

Combine like terms: 0 + -18 = -18
4y = -18

Divide each side by '4'.
y = -4.5

Simplifying
y = -4.5

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