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

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


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

Reorder the terms:
-2y + 9(7 + 2y) = 1 + -9(-7 + -1y)
-2y + (7 * 9 + 2y * 9) = 1 + -9(-7 + -1y)
-2y + (63 + 18y) = 1 + -9(-7 + -1y)

Reorder the terms:
63 + -2y + 18y = 1 + -9(-7 + -1y)

Combine like terms: -2y + 18y = 16y
63 + 16y = 1 + -9(-7 + -1y)
63 + 16y = 1 + (-7 * -9 + -1y * -9)
63 + 16y = 1 + (63 + 9y)

Combine like terms: 1 + 63 = 64
63 + 16y = 64 + 9y

Solving
63 + 16y = 64 + 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.
63 + 16y + -9y = 64 + 9y + -9y

Combine like terms: 16y + -9y = 7y
63 + 7y = 64 + 9y + -9y

Combine like terms: 9y + -9y = 0
63 + 7y = 64 + 0
63 + 7y = 64

Add '-63' to each side of the equation.
63 + -63 + 7y = 64 + -63

Combine like terms: 63 + -63 = 0
0 + 7y = 64 + -63
7y = 64 + -63

Combine like terms: 64 + -63 = 1
7y = 1

Divide each side by '7'.
y = 0.1428571429

Simplifying
y = 0.1428571429

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