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Simplifying 20 + -1(8 + x) = (-1 + -1x) + 29 20 + (8 * -1 + x * -1) = (-1 + -1x) + 29 20 + (-8 + -1x) = (-1 + -1x) + 29 Combine like terms: 20 + -8 = 12 12 + -1x = (-1 + -1x) + 29 Remove parenthesis around (-1 + -1x) 12 + -1x = -1 + -1x + 29 Reorder the terms: 12 + -1x = -1 + 29 + -1x Combine like terms: -1 + 29 = 28 12 + -1x = 28 + -1x Add 'x' to each side of the equation. 12 + -1x + x = 28 + -1x + x Combine like terms: -1x + x = 0 12 + 0 = 28 + -1x + x 12 = 28 + -1x + x Combine like terms: -1x + x = 0 12 = 28 + 0 12 = 28 Solving 12 = 28 Couldn't find a variable to solve for. This equation is invalid, the left and right sides are not equal, therefore there is no solution.
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