-4y-3(-7y-3)=-7-8(1-y)

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Solution for -4y-3(-7y-3)=-7-8(1-y) equation:


Simplifying
-4y + -3(-7y + -3) = -7 + -8(1 + -1y)

Reorder the terms:
-4y + -3(-3 + -7y) = -7 + -8(1 + -1y)
-4y + (-3 * -3 + -7y * -3) = -7 + -8(1 + -1y)
-4y + (9 + 21y) = -7 + -8(1 + -1y)

Reorder the terms:
9 + -4y + 21y = -7 + -8(1 + -1y)

Combine like terms: -4y + 21y = 17y
9 + 17y = -7 + -8(1 + -1y)
9 + 17y = -7 + (1 * -8 + -1y * -8)
9 + 17y = -7 + (-8 + 8y)

Combine like terms: -7 + -8 = -15
9 + 17y = -15 + 8y

Solving
9 + 17y = -15 + 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.
9 + 17y + -8y = -15 + 8y + -8y

Combine like terms: 17y + -8y = 9y
9 + 9y = -15 + 8y + -8y

Combine like terms: 8y + -8y = 0
9 + 9y = -15 + 0
9 + 9y = -15

Add '-9' to each side of the equation.
9 + -9 + 9y = -15 + -9

Combine like terms: 9 + -9 = 0
0 + 9y = -15 + -9
9y = -15 + -9

Combine like terms: -15 + -9 = -24
9y = -24

Divide each side by '9'.
y = -2.666666667

Simplifying
y = -2.666666667

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