7(2y+1)-4y=9-8(y+7)

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Solution for 7(2y+1)-4y=9-8(y+7) equation:


Simplifying
7(2y + 1) + -4y = 9 + -8(y + 7)

Reorder the terms:
7(1 + 2y) + -4y = 9 + -8(y + 7)
(1 * 7 + 2y * 7) + -4y = 9 + -8(y + 7)
(7 + 14y) + -4y = 9 + -8(y + 7)

Combine like terms: 14y + -4y = 10y
7 + 10y = 9 + -8(y + 7)

Reorder the terms:
7 + 10y = 9 + -8(7 + y)
7 + 10y = 9 + (7 * -8 + y * -8)
7 + 10y = 9 + (-56 + -8y)

Combine like terms: 9 + -56 = -47
7 + 10y = -47 + -8y

Solving
7 + 10y = -47 + -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.
7 + 10y + 8y = -47 + -8y + 8y

Combine like terms: 10y + 8y = 18y
7 + 18y = -47 + -8y + 8y

Combine like terms: -8y + 8y = 0
7 + 18y = -47 + 0
7 + 18y = -47

Add '-7' to each side of the equation.
7 + -7 + 18y = -47 + -7

Combine like terms: 7 + -7 = 0
0 + 18y = -47 + -7
18y = -47 + -7

Combine like terms: -47 + -7 = -54
18y = -54

Divide each side by '18'.
y = -3

Simplifying
y = -3

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