7y-8=8y-7

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


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

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

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

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

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

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

Add '8' to each side of the equation.
-8 + 8 + -1y = -7 + 8

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

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

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

Simplifying
y = -1

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