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

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


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

Reorder the terms:
-2y + 4(-7 + 8y) = 4 + 9(-9 + -1y)
-2y + (-7 * 4 + 8y * 4) = 4 + 9(-9 + -1y)
-2y + (-28 + 32y) = 4 + 9(-9 + -1y)

Reorder the terms:
-28 + -2y + 32y = 4 + 9(-9 + -1y)

Combine like terms: -2y + 32y = 30y
-28 + 30y = 4 + 9(-9 + -1y)
-28 + 30y = 4 + (-9 * 9 + -1y * 9)
-28 + 30y = 4 + (-81 + -9y)

Combine like terms: 4 + -81 = -77
-28 + 30y = -77 + -9y

Solving
-28 + 30y = -77 + -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.
-28 + 30y + 9y = -77 + -9y + 9y

Combine like terms: 30y + 9y = 39y
-28 + 39y = -77 + -9y + 9y

Combine like terms: -9y + 9y = 0
-28 + 39y = -77 + 0
-28 + 39y = -77

Add '28' to each side of the equation.
-28 + 28 + 39y = -77 + 28

Combine like terms: -28 + 28 = 0
0 + 39y = -77 + 28
39y = -77 + 28

Combine like terms: -77 + 28 = -49
39y = -49

Divide each side by '39'.
y = -1.256410256

Simplifying
y = -1.256410256

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