15x+3y=-45

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Solution for 15x+3y=-45 equation: 


Simplifying
15x + 3y = -45

Solving
15x + 3y = -45

Solving for variable 'x'.

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

Add '-3y' to each side of the equation.
15x + 3y + -3y = -45 + -3y

Combine like terms: 3y + -3y = 0
15x + 0 = -45 + -3y
15x = -45 + -3y

Divide each side by '15'.
x = -3 + -0.2y

Simplifying
x = -3 + -0.2y

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