8x+9y=-18

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Solution for 8x+9y=-18 equation: 


Simplifying
8x + 9y = -18

Solving
8x + 9y = -18

Solving for variable 'x'.

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

Add '-9y' to each side of the equation.
8x + 9y + -9y = -18 + -9y

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

Divide each side by '8'.
x = -2.25 + -1.125y

Simplifying
x = -2.25 + -1.125y

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