3x+8y=-16

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Solution for 3x+8y=-16 equation: 


Simplifying
3x + 8y = -16

Solving
3x + 8y = -16

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.
3x + 8y + -8y = -16 + -8y

Combine like terms: 8y + -8y = 0
3x + 0 = -16 + -8y
3x = -16 + -8y

Divide each side by '3'.
x = -5.333333333 + -2.666666667y

Simplifying
x = -5.333333333 + -2.666666667y

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