10y+9=-8y-9

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


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

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

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

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

Solving for variable 'y'.

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

Add '8y' to each side of the equation.
9 + 10y + 8y = -9 + -8y + 8y

Combine like terms: 10y + 8y = 18y
9 + 18y = -9 + -8y + 8y

Combine like terms: -8y + 8y = 0
9 + 18y = -9 + 0
9 + 18y = -9

Add '-9' to each side of the equation.
9 + -9 + 18y = -9 + -9

Combine like terms: 9 + -9 = 0
0 + 18y = -9 + -9
18y = -9 + -9

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

Divide each side by '18'.
y = -1

Simplifying
y = -1

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