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 = -3
-1y = -3

Divide each side by '-1'.
y = 3

Simplifying
y = 3

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