-3y+9(-9y+5)=6+9(-7-y)

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Solution for -3y+9(-9y+5)=6+9(-7-y) equation:


Simplifying
-3y + 9(-9y + 5) = 6 + 9(-7 + -1y)

Reorder the terms:
-3y + 9(5 + -9y) = 6 + 9(-7 + -1y)
-3y + (5 * 9 + -9y * 9) = 6 + 9(-7 + -1y)
-3y + (45 + -81y) = 6 + 9(-7 + -1y)

Reorder the terms:
45 + -3y + -81y = 6 + 9(-7 + -1y)

Combine like terms: -3y + -81y = -84y
45 + -84y = 6 + 9(-7 + -1y)
45 + -84y = 6 + (-7 * 9 + -1y * 9)
45 + -84y = 6 + (-63 + -9y)

Combine like terms: 6 + -63 = -57
45 + -84y = -57 + -9y

Solving
45 + -84y = -57 + -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.
45 + -84y + 9y = -57 + -9y + 9y

Combine like terms: -84y + 9y = -75y
45 + -75y = -57 + -9y + 9y

Combine like terms: -9y + 9y = 0
45 + -75y = -57 + 0
45 + -75y = -57

Add '-45' to each side of the equation.
45 + -45 + -75y = -57 + -45

Combine like terms: 45 + -45 = 0
0 + -75y = -57 + -45
-75y = -57 + -45

Combine like terms: -57 + -45 = -102
-75y = -102

Divide each side by '-75'.
y = 1.36

Simplifying
y = 1.36

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