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Simplifying 8 + 7x = 20 + x Solving 8 + 7x = 20 + x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1x' to each side of the equation. 8 + 7x + -1x = 20 + x + -1x Combine like terms: 7x + -1x = 6x 8 + 6x = 20 + x + -1x Combine like terms: x + -1x = 0 8 + 6x = 20 + 0 8 + 6x = 20 Add '-8' to each side of the equation. 8 + -8 + 6x = 20 + -8 Combine like terms: 8 + -8 = 0 0 + 6x = 20 + -8 6x = 20 + -8 Combine like terms: 20 + -8 = 12 6x = 12 Divide each side by '6'. x = 2 Simplifying x = 2
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