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Simplifying -7s + 1 = -9s + 2(s + -1) Reorder the terms: 1 + -7s = -9s + 2(s + -1) Reorder the terms: 1 + -7s = -9s + 2(-1 + s) 1 + -7s = -9s + (-1 * 2 + s * 2) 1 + -7s = -9s + (-2 + 2s) Reorder the terms: 1 + -7s = -2 + -9s + 2s Combine like terms: -9s + 2s = -7s 1 + -7s = -2 + -7s Add '7s' to each side of the equation. 1 + -7s + 7s = -2 + -7s + 7s Combine like terms: -7s + 7s = 0 1 + 0 = -2 + -7s + 7s 1 = -2 + -7s + 7s Combine like terms: -7s + 7s = 0 1 = -2 + 0 1 = -2 Solving 1 = -2 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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