9x+8y=-15

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Solution for 9x+8y=-15 equation: 


Simplifying
9x + 8y = -15

Solving
9x + 8y = -15

Solving for variable 'x'.

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

Add '-8y' to each side of the equation.
9x + 8y + -8y = -15 + -8y

Combine like terms: 8y + -8y = 0
9x + 0 = -15 + -8y
9x = -15 + -8y

Divide each side by '9'.
x = -1.666666667 + -0.8888888889y

Simplifying
x = -1.666666667 + -0.8888888889y

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