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Simplifying 3x + 9 + 3 = 19 Reorder the terms: 9 + 3 + 3x = 19 Combine like terms: 9 + 3 = 12 12 + 3x = 19 Solving 12 + 3x = 19 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + 3x = 19 + -12 Combine like terms: 12 + -12 = 0 0 + 3x = 19 + -12 3x = 19 + -12 Combine like terms: 19 + -12 = 7 3x = 7 Divide each side by '3'. x = 2.333333333 Simplifying x = 2.333333333
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