8y-9y=4

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Solution for 8y-9y=4 equation: 


Simplifying
8y + -9y = 4

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

Solving
-1y = 4

Solving for variable 'y'.

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

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

Simplifying
y = -4

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