2y(4)=9(y-1)

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Solution for 2y(4)=9(y-1) equation:


Simplifying
2y(4) = 9(y + -1)

Reorder the terms for easier multiplication:
2 * 4y = 9(y + -1)

Multiply 2 * 4
8y = 9(y + -1)

Reorder the terms:
8y = 9(-1 + y)
8y = (-1 * 9 + y * 9)
8y = (-9 + 9y)

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

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

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

Divide each side by '-1'.
y = 9

Simplifying
y = 9

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