5y-7y=-9

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Solution for 5y-7y=-9 equation: 


Simplifying
5y + -7y = -9

Combine like terms: 5y + -7y = -2y
-2y = -9

Solving
-2y = -9

Solving for variable 'y'.

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

Divide each side by '-2'.
y = 4.5

Simplifying
y = 4.5

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