9(2-y)+3(5+2y)=2(7-2y)-4(y-1)

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Solution for 9(2-y)+3(5+2y)=2(7-2y)-4(y-1) equation:


Simplifying
9(2 + -1y) + 3(5 + 2y) = 2(7 + -2y) + -4(y + -1)
(2 * 9 + -1y * 9) + 3(5 + 2y) = 2(7 + -2y) + -4(y + -1)
(18 + -9y) + 3(5 + 2y) = 2(7 + -2y) + -4(y + -1)
18 + -9y + (5 * 3 + 2y * 3) = 2(7 + -2y) + -4(y + -1)
18 + -9y + (15 + 6y) = 2(7 + -2y) + -4(y + -1)

Reorder the terms:
18 + 15 + -9y + 6y = 2(7 + -2y) + -4(y + -1)

Combine like terms: 18 + 15 = 33
33 + -9y + 6y = 2(7 + -2y) + -4(y + -1)

Combine like terms: -9y + 6y = -3y
33 + -3y = 2(7 + -2y) + -4(y + -1)
33 + -3y = (7 * 2 + -2y * 2) + -4(y + -1)
33 + -3y = (14 + -4y) + -4(y + -1)

Reorder the terms:
33 + -3y = 14 + -4y + -4(-1 + y)
33 + -3y = 14 + -4y + (-1 * -4 + y * -4)
33 + -3y = 14 + -4y + (4 + -4y)

Reorder the terms:
33 + -3y = 14 + 4 + -4y + -4y

Combine like terms: 14 + 4 = 18
33 + -3y = 18 + -4y + -4y

Combine like terms: -4y + -4y = -8y
33 + -3y = 18 + -8y

Solving
33 + -3y = 18 + -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.
33 + -3y + 8y = 18 + -8y + 8y

Combine like terms: -3y + 8y = 5y
33 + 5y = 18 + -8y + 8y

Combine like terms: -8y + 8y = 0
33 + 5y = 18 + 0
33 + 5y = 18

Add '-33' to each side of the equation.
33 + -33 + 5y = 18 + -33

Combine like terms: 33 + -33 = 0
0 + 5y = 18 + -33
5y = 18 + -33

Combine like terms: 18 + -33 = -15
5y = -15

Divide each side by '5'.
y = -3

Simplifying
y = -3

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