80=8-9y

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Solution for 80=8-9y equation:


Simplifying
80 = 8 + -9y

Solving
80 = 8 + -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.
80 + 9y = 8 + -9y + 9y

Combine like terms: -9y + 9y = 0
80 + 9y = 8 + 0
80 + 9y = 8

Add '-80' to each side of the equation.
80 + -80 + 9y = 8 + -80

Combine like terms: 80 + -80 = 0
0 + 9y = 8 + -80
9y = 8 + -80

Combine like terms: 8 + -80 = -72
9y = -72

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

Simplifying
y = -8

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