9y+7=4y-8

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Solution for 9y+7=4y-8 equation:


Simplifying
9y + 7 = 4y + -8

Reorder the terms:
7 + 9y = 4y + -8

Reorder the terms:
7 + 9y = -8 + 4y

Solving
7 + 9y = -8 + 4y

Solving for variable 'y'.

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

Add '-4y' to each side of the equation.
7 + 9y + -4y = -8 + 4y + -4y

Combine like terms: 9y + -4y = 5y
7 + 5y = -8 + 4y + -4y

Combine like terms: 4y + -4y = 0
7 + 5y = -8 + 0
7 + 5y = -8

Add '-7' to each side of the equation.
7 + -7 + 5y = -8 + -7

Combine like terms: 7 + -7 = 0
0 + 5y = -8 + -7
5y = -8 + -7

Combine like terms: -8 + -7 = -15
5y = -15

Divide each side by '5'.
y = -3

Simplifying
y = -3

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