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Simplifying (x + 4) + -1(x + 9) = 0 Reorder the terms: (4 + x) + -1(x + 9) = 0 Remove parenthesis around (4 + x) 4 + x + -1(x + 9) = 0 Reorder the terms: 4 + x + -1(9 + x) = 0 4 + x + (9 * -1 + x * -1) = 0 4 + x + (-9 + -1x) = 0 Reorder the terms: 4 + -9 + x + -1x = 0 Combine like terms: 4 + -9 = -5 -5 + x + -1x = 0 Combine like terms: x + -1x = 0 -5 + 0 = 0 -5 = 0 Solving -5 = 0 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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