9(y-5)=8(y-9)

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Solution for 9(y-5)=8(y-9) equation:


Simplifying
9(y + -5) = 8(y + -9)

Reorder the terms:
9(-5 + y) = 8(y + -9)
(-5 * 9 + y * 9) = 8(y + -9)
(-45 + 9y) = 8(y + -9)

Reorder the terms:
-45 + 9y = 8(-9 + y)
-45 + 9y = (-9 * 8 + y * 8)
-45 + 9y = (-72 + 8y)

Solving
-45 + 9y = -72 + 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.
-45 + 9y + -8y = -72 + 8y + -8y

Combine like terms: 9y + -8y = 1y
-45 + 1y = -72 + 8y + -8y

Combine like terms: 8y + -8y = 0
-45 + 1y = -72 + 0
-45 + 1y = -72

Add '45' to each side of the equation.
-45 + 45 + 1y = -72 + 45

Combine like terms: -45 + 45 = 0
0 + 1y = -72 + 45
1y = -72 + 45

Combine like terms: -72 + 45 = -27
1y = -27

Divide each side by '1'.
y = -27

Simplifying
y = -27

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