Simplifying 3x + -3y = 27 Solving 3x + -3y = 27 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 = 27 + 3y Combine like terms: -3y + 3y = 0 3x + 0 = 27 + 3y 3x = 27 + 3y Divide each side by '3'. x = 9 + y Simplifying x = 9 + y
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