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Simplifying (x + 5) * 28 = 2x + 21 Reorder the terms: (5 + x) * 28 = 2x + 21 Reorder the terms for easier multiplication: 28(5 + x) = 2x + 21 (5 * 28 + x * 28) = 2x + 21 (140 + 28x) = 2x + 21 Reorder the terms: 140 + 28x = 21 + 2x Solving 140 + 28x = 21 + 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. 140 + 28x + -2x = 21 + 2x + -2x Combine like terms: 28x + -2x = 26x 140 + 26x = 21 + 2x + -2x Combine like terms: 2x + -2x = 0 140 + 26x = 21 + 0 140 + 26x = 21 Add '-140' to each side of the equation. 140 + -140 + 26x = 21 + -140 Combine like terms: 140 + -140 = 0 0 + 26x = 21 + -140 26x = 21 + -140 Combine like terms: 21 + -140 = -119 26x = -119 Divide each side by '26'. x = -4.576923077 Simplifying x = -4.576923077
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