3x+3y=18(2)

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Solution for 3x+3y=18(2) equation: 


Simplifying
3x + 3y = 18(2)

Multiply 18 * 2
3x + 3y = 36

Solving
3x + 3y = 36

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.
3x + 3y + -3y = 36 + -3y

Combine like terms: 3y + -3y = 0
3x + 0 = 36 + -3y
3x = 36 + -3y

Divide each side by '3'.
x = 12 + -1y

Simplifying
x = 12 + -1y

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