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Simplifying -7x + 57 = 12 + -7(x + 8) Reorder the terms: 57 + -7x = 12 + -7(x + 8) Reorder the terms: 57 + -7x = 12 + -7(8 + x) 57 + -7x = 12 + (8 * -7 + x * -7) 57 + -7x = 12 + (-56 + -7x) Combine like terms: 12 + -56 = -44 57 + -7x = -44 + -7x Add '7x' to each side of the equation. 57 + -7x + 7x = -44 + -7x + 7x Combine like terms: -7x + 7x = 0 57 + 0 = -44 + -7x + 7x 57 = -44 + -7x + 7x Combine like terms: -7x + 7x = 0 57 = -44 + 0 57 = -44 Solving 57 = -44 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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