-10y-9+8y=9+y

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Solution for -10y-9+8y=9+y equation:


Simplifying
-10y + -9 + 8y = 9 + y

Reorder the terms:
-9 + -10y + 8y = 9 + y

Combine like terms: -10y + 8y = -2y
-9 + -2y = 9 + y

Solving
-9 + -2y = 9 + y

Solving for variable 'y'.

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

Add '-1y' to each side of the equation.
-9 + -2y + -1y = 9 + y + -1y

Combine like terms: -2y + -1y = -3y
-9 + -3y = 9 + y + -1y

Combine like terms: y + -1y = 0
-9 + -3y = 9 + 0
-9 + -3y = 9

Add '9' to each side of the equation.
-9 + 9 + -3y = 9 + 9

Combine like terms: -9 + 9 = 0
0 + -3y = 9 + 9
-3y = 9 + 9

Combine like terms: 9 + 9 = 18
-3y = 18

Divide each side by '-3'.
y = -6

Simplifying
y = -6

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