8y+4=9y-7

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Solution for 8y+4=9y-7 equation:


Simplifying
8y + 4 = 9y + -7

Reorder the terms:
4 + 8y = 9y + -7

Reorder the terms:
4 + 8y = -7 + 9y

Solving
4 + 8y = -7 + 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.
4 + 8y + -9y = -7 + 9y + -9y

Combine like terms: 8y + -9y = -1y
4 + -1y = -7 + 9y + -9y

Combine like terms: 9y + -9y = 0
4 + -1y = -7 + 0
4 + -1y = -7

Add '-4' to each side of the equation.
4 + -4 + -1y = -7 + -4

Combine like terms: 4 + -4 = 0
0 + -1y = -7 + -4
-1y = -7 + -4

Combine like terms: -7 + -4 = -11
-1y = -11

Divide each side by '-1'.
y = 11

Simplifying
y = 11

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