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Simplifying 7x + 20 = 8x + 40 Reorder the terms: 20 + 7x = 8x + 40 Reorder the terms: 20 + 7x = 40 + 8x Solving 20 + 7x = 40 + 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. 20 + 7x + -8x = 40 + 8x + -8x Combine like terms: 7x + -8x = -1x 20 + -1x = 40 + 8x + -8x Combine like terms: 8x + -8x = 0 20 + -1x = 40 + 0 20 + -1x = 40 Add '-20' to each side of the equation. 20 + -20 + -1x = 40 + -20 Combine like terms: 20 + -20 = 0 0 + -1x = 40 + -20 -1x = 40 + -20 Combine like terms: 40 + -20 = 20 -1x = 20 Divide each side by '-1'. x = -20 Simplifying x = -20
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