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Simplifying 42 + -3x = 3 Solving 42 + -3x = 3 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-42' to each side of the equation. 42 + -42 + -3x = 3 + -42 Combine like terms: 42 + -42 = 0 0 + -3x = 3 + -42 -3x = 3 + -42 Combine like terms: 3 + -42 = -39 -3x = -39 Divide each side by '-3'. x = 13 Simplifying x = 13
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