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Simplifying 40 + x = 2(x + 14) Reorder the terms: 40 + x = 2(14 + x) 40 + x = (14 * 2 + x * 2) 40 + x = (28 + 2x) Solving 40 + x = 28 + 2x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2x' to each side of the equation. 40 + x + -2x = 28 + 2x + -2x Combine like terms: x + -2x = -1x 40 + -1x = 28 + 2x + -2x Combine like terms: 2x + -2x = 0 40 + -1x = 28 + 0 40 + -1x = 28 Add '-40' to each side of the equation. 40 + -40 + -1x = 28 + -40 Combine like terms: 40 + -40 = 0 0 + -1x = 28 + -40 -1x = 28 + -40 Combine like terms: 28 + -40 = -12 -1x = -12 Divide each side by '-1'. x = 12 Simplifying x = 12
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