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Simplifying (x + -4) + -1(x + 7) = 8 Reorder the terms: (-4 + x) + -1(x + 7) = 8 Remove parenthesis around (-4 + x) -4 + x + -1(x + 7) = 8 Reorder the terms: -4 + x + -1(7 + x) = 8 -4 + x + (7 * -1 + x * -1) = 8 -4 + x + (-7 + -1x) = 8 Reorder the terms: -4 + -7 + x + -1x = 8 Combine like terms: -4 + -7 = -11 -11 + x + -1x = 8 Combine like terms: x + -1x = 0 -11 + 0 = 8 -11 = 8 Solving -11 = 8 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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