3y+12x=30

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Solution for 3y+12x=30 equation: 


Simplifying
3y + 12x = 30

Reorder the terms:
12x + 3y = 30

Solving
12x + 3y = 30

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.
12x + 3y + -3y = 30 + -3y

Combine like terms: 3y + -3y = 0
12x + 0 = 30 + -3y
12x = 30 + -3y

Divide each side by '12'.
x = 2.5 + -0.25y

Simplifying
x = 2.5 + -0.25y

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