-3y+6(-9y+7)=-4-6(-9-y)

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Solution for -3y+6(-9y+7)=-4-6(-9-y) equation:


Simplifying
-3y + 6(-9y + 7) = -4 + -6(-9 + -1y)

Reorder the terms:
-3y + 6(7 + -9y) = -4 + -6(-9 + -1y)
-3y + (7 * 6 + -9y * 6) = -4 + -6(-9 + -1y)
-3y + (42 + -54y) = -4 + -6(-9 + -1y)

Reorder the terms:
42 + -3y + -54y = -4 + -6(-9 + -1y)

Combine like terms: -3y + -54y = -57y
42 + -57y = -4 + -6(-9 + -1y)
42 + -57y = -4 + (-9 * -6 + -1y * -6)
42 + -57y = -4 + (54 + 6y)

Combine like terms: -4 + 54 = 50
42 + -57y = 50 + 6y

Solving
42 + -57y = 50 + 6y

Solving for variable 'y'.

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

Add '-6y' to each side of the equation.
42 + -57y + -6y = 50 + 6y + -6y

Combine like terms: -57y + -6y = -63y
42 + -63y = 50 + 6y + -6y

Combine like terms: 6y + -6y = 0
42 + -63y = 50 + 0
42 + -63y = 50

Add '-42' to each side of the equation.
42 + -42 + -63y = 50 + -42

Combine like terms: 42 + -42 = 0
0 + -63y = 50 + -42
-63y = 50 + -42

Combine like terms: 50 + -42 = 8
-63y = 8

Divide each side by '-63'.
y = -0.126984127

Simplifying
y = -0.126984127

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