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Simplifying (y + -9) + -1(y + 7) = 8 Reorder the terms: (-9 + y) + -1(y + 7) = 8 Remove parenthesis around (-9 + y) -9 + y + -1(y + 7) = 8 Reorder the terms: -9 + y + -1(7 + y) = 8 -9 + y + (7 * -1 + y * -1) = 8 -9 + y + (-7 + -1y) = 8 Reorder the terms: -9 + -7 + y + -1y = 8 Combine like terms: -9 + -7 = -16 -16 + y + -1y = 8 Combine like terms: y + -1y = 0 -16 + 0 = 8 -16 = 8 Solving -16 = 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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