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Simplifying 138 + -3x = 42x + -23 Reorder the terms: 138 + -3x = -23 + 42x Solving 138 + -3x = -23 + 42x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-42x' to each side of the equation. 138 + -3x + -42x = -23 + 42x + -42x Combine like terms: -3x + -42x = -45x 138 + -45x = -23 + 42x + -42x Combine like terms: 42x + -42x = 0 138 + -45x = -23 + 0 138 + -45x = -23 Add '-138' to each side of the equation. 138 + -138 + -45x = -23 + -138 Combine like terms: 138 + -138 = 0 0 + -45x = -23 + -138 -45x = -23 + -138 Combine like terms: -23 + -138 = -161 -45x = -161 Divide each side by '-45'. x = 3.577777778 Simplifying x = 3.577777778
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