7y-9=8+2y

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Solution for 7y-9=8+2y equation:


Simplifying
7y + -9 = 8 + 2y

Reorder the terms:
-9 + 7y = 8 + 2y

Solving
-9 + 7y = 8 + 2y

Solving for variable 'y'.

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

Add '-2y' to each side of the equation.
-9 + 7y + -2y = 8 + 2y + -2y

Combine like terms: 7y + -2y = 5y
-9 + 5y = 8 + 2y + -2y

Combine like terms: 2y + -2y = 0
-9 + 5y = 8 + 0
-9 + 5y = 8

Add '9' to each side of the equation.
-9 + 9 + 5y = 8 + 9

Combine like terms: -9 + 9 = 0
0 + 5y = 8 + 9
5y = 8 + 9

Combine like terms: 8 + 9 = 17
5y = 17

Divide each side by '5'.
y = 3.4

Simplifying
y = 3.4

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