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Simplifying 43 = x + 2x + 7 Reorder the terms: 43 = 7 + x + 2x Combine like terms: x + 2x = 3x 43 = 7 + 3x Solving 43 = 7 + 3x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3x' to each side of the equation. 43 + -3x = 7 + 3x + -3x Combine like terms: 3x + -3x = 0 43 + -3x = 7 + 0 43 + -3x = 7 Add '-43' to each side of the equation. 43 + -43 + -3x = 7 + -43 Combine like terms: 43 + -43 = 0 0 + -3x = 7 + -43 -3x = 7 + -43 Combine like terms: 7 + -43 = -36 -3x = -36 Divide each side by '-3'. x = 12 Simplifying x = 12
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