9y-9-10y-90=77

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Solution for 9y-9-10y-90=77 equation:


Simplifying
9y + -9 + -10y + -90 = 77

Reorder the terms:
-9 + -90 + 9y + -10y = 77

Combine like terms: -9 + -90 = -99
-99 + 9y + -10y = 77

Combine like terms: 9y + -10y = -1y
-99 + -1y = 77

Solving
-99 + -1y = 77

Solving for variable 'y'.

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

Add '99' to each side of the equation.
-99 + 99 + -1y = 77 + 99

Combine like terms: -99 + 99 = 0
0 + -1y = 77 + 99
-1y = 77 + 99

Combine like terms: 77 + 99 = 176
-1y = 176

Divide each side by '-1'.
y = -176

Simplifying
y = -176

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