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Simplifying 7x + 15 = 8x + -20 Reorder the terms: 15 + 7x = 8x + -20 Reorder the terms: 15 + 7x = -20 + 8x Solving 15 + 7x = -20 + 8x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8x' to each side of the equation. 15 + 7x + -8x = -20 + 8x + -8x Combine like terms: 7x + -8x = -1x 15 + -1x = -20 + 8x + -8x Combine like terms: 8x + -8x = 0 15 + -1x = -20 + 0 15 + -1x = -20 Add '-15' to each side of the equation. 15 + -15 + -1x = -20 + -15 Combine like terms: 15 + -15 = 0 0 + -1x = -20 + -15 -1x = -20 + -15 Combine like terms: -20 + -15 = -35 -1x = -35 Divide each side by '-1'. x = 35 Simplifying x = 35
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