9(2y+1)=4(5y-4)

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Solution for 9(2y+1)=4(5y-4) equation:


Simplifying
9(2y + 1) = 4(5y + -4)

Reorder the terms:
9(1 + 2y) = 4(5y + -4)
(1 * 9 + 2y * 9) = 4(5y + -4)
(9 + 18y) = 4(5y + -4)

Reorder the terms:
9 + 18y = 4(-4 + 5y)
9 + 18y = (-4 * 4 + 5y * 4)
9 + 18y = (-16 + 20y)

Solving
9 + 18y = -16 + 20y

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '-20y' to each side of the equation.
9 + 18y + -20y = -16 + 20y + -20y

Combine like terms: 18y + -20y = -2y
9 + -2y = -16 + 20y + -20y

Combine like terms: 20y + -20y = 0
9 + -2y = -16 + 0
9 + -2y = -16

Add '-9' to each side of the equation.
9 + -9 + -2y = -16 + -9

Combine like terms: 9 + -9 = 0
0 + -2y = -16 + -9
-2y = -16 + -9

Combine like terms: -16 + -9 = -25
-2y = -25

Divide each side by '-2'.
y = 12.5

Simplifying
y = 12.5

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