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Simplifying (x + -3) + 2(x + 4) = (3x + -7) Reorder the terms: (-3 + x) + 2(x + 4) = (3x + -7) Remove parenthesis around (-3 + x) -3 + x + 2(x + 4) = (3x + -7) Reorder the terms: -3 + x + 2(4 + x) = (3x + -7) -3 + x + (4 * 2 + x * 2) = (3x + -7) -3 + x + (8 + 2x) = (3x + -7) Reorder the terms: -3 + 8 + x + 2x = (3x + -7) Combine like terms: -3 + 8 = 5 5 + x + 2x = (3x + -7) Combine like terms: x + 2x = 3x 5 + 3x = (3x + -7) Reorder the terms: 5 + 3x = (-7 + 3x) Remove parenthesis around (-7 + 3x) 5 + 3x = -7 + 3x Add '-3x' to each side of the equation. 5 + 3x + -3x = -7 + 3x + -3x Combine like terms: 3x + -3x = 0 5 + 0 = -7 + 3x + -3x 5 = -7 + 3x + -3x Combine like terms: 3x + -3x = 0 5 = -7 + 0 5 = -7 Solving 5 = -7 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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