7-7y=9-8y

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


Simplifying
7 + -7y = 9 + -8y

Solving
7 + -7y = 9 + -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.
7 + -7y + 8y = 9 + -8y + 8y

Combine like terms: -7y + 8y = 1y
7 + 1y = 9 + -8y + 8y

Combine like terms: -8y + 8y = 0
7 + 1y = 9 + 0
7 + 1y = 9

Add '-7' to each side of the equation.
7 + -7 + 1y = 9 + -7

Combine like terms: 7 + -7 = 0
0 + 1y = 9 + -7
1y = 9 + -7

Combine like terms: 9 + -7 = 2
1y = 2

Divide each side by '1'.
y = 2

Simplifying
y = 2

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