-3(x+3y)=18

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


Simplifying
-3(x + 3y) = 18
(x * -3 + 3y * -3) = 18
(-3x + -9y) = 18

Solving
-3x + -9y = 18

Solving for variable 'x'.

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

Add '9y' to each side of the equation.
-3x + -9y + 9y = 18 + 9y

Combine like terms: -9y + 9y = 0
-3x + 0 = 18 + 9y
-3x = 18 + 9y

Divide each side by '-3'.
x = -6 + -3y

Simplifying
x = -6 + -3y

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