7y-45=9y

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Solution for 7y-45=9y equation:


Simplifying
7y + -45 = 9y

Reorder the terms:
-45 + 7y = 9y

Solving
-45 + 7y = 9y

Solving for variable 'y'.

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

Add '-9y' to each side of the equation.
-45 + 7y + -9y = 9y + -9y

Combine like terms: 7y + -9y = -2y
-45 + -2y = 9y + -9y

Combine like terms: 9y + -9y = 0
-45 + -2y = 0

Add '45' to each side of the equation.
-45 + 45 + -2y = 0 + 45

Combine like terms: -45 + 45 = 0
0 + -2y = 0 + 45
-2y = 0 + 45

Combine like terms: 0 + 45 = 45
-2y = 45

Divide each side by '-2'.
y = -22.5

Simplifying
y = -22.5

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