9y-8=4y+7

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


Simplifying
9y + -8 = 4y + 7

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

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

Solving
-8 + 9y = 7 + 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.
-8 + 9y + -4y = 7 + 4y + -4y

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

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

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

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

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

Divide each side by '5'.
y = 3

Simplifying
y = 3

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