3y+9x=15

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Solution for 3y+9x=15 equation: 


Simplifying
3y + 9x = 15

Reorder the terms:
9x + 3y = 15

Solving
9x + 3y = 15

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.
9x + 3y + -3y = 15 + -3y

Combine like terms: 3y + -3y = 0
9x + 0 = 15 + -3y
9x = 15 + -3y

Divide each side by '9'.
x = 1.666666667 + -0.3333333333y

Simplifying
x = 1.666666667 + -0.3333333333y

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