10(y+9)-(y+9)-(y+9)=

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Solution for 10(y+9)-(y+9)-(y+9)= equation:


Simplifying
10(y + 9) + -1(y + 9) + -1(y + 9) = 0

Reorder the terms:
10(9 + y) + -1(y + 9) + -1(y + 9) = 0
(9 * 10 + y * 10) + -1(y + 9) + -1(y + 9) = 0
(90 + 10y) + -1(y + 9) + -1(y + 9) = 0

Reorder the terms:
90 + 10y + -1(9 + y) + -1(y + 9) = 0
90 + 10y + (9 * -1 + y * -1) + -1(y + 9) = 0
90 + 10y + (-9 + -1y) + -1(y + 9) = 0

Reorder the terms:
90 + 10y + -9 + -1y + -1(9 + y) = 0
90 + 10y + -9 + -1y + (9 * -1 + y * -1) = 0
90 + 10y + -9 + -1y + (-9 + -1y) = 0

Reorder the terms:
90 + -9 + -9 + 10y + -1y + -1y = 0

Combine like terms: 90 + -9 = 81
81 + -9 + 10y + -1y + -1y = 0

Combine like terms: 81 + -9 = 72
72 + 10y + -1y + -1y = 0

Combine like terms: 10y + -1y = 9y
72 + 9y + -1y = 0

Combine like terms: 9y + -1y = 8y
72 + 8y = 0

Solving
72 + 8y = 0

Solving for variable 'y'.

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

Add '-72' to each side of the equation.
72 + -72 + 8y = 0 + -72

Combine like terms: 72 + -72 = 0
0 + 8y = 0 + -72
8y = 0 + -72

Combine like terms: 0 + -72 = -72
8y = -72

Divide each side by '8'.
y = -9

Simplifying
y = -9

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