9y-4=8y-8

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


Simplifying
9y + -4 = 8y + -8

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

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

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

Solving for variable 'y'.

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

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

Combine like terms: 9y + -8y = 1y
-4 + 1y = -8 + 8y + -8y

Combine like terms: 8y + -8y = 0
-4 + 1y = -8 + 0
-4 + 1y = -8

Add '4' to each side of the equation.
-4 + 4 + 1y = -8 + 4

Combine like terms: -4 + 4 = 0
0 + 1y = -8 + 4
1y = -8 + 4

Combine like terms: -8 + 4 = -4
1y = -4

Divide each side by '1'.
y = -4

Simplifying
y = -4

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