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Simplifying -3(x + -1) + -4x = 7 + -7(x + 7) Reorder the terms: -3(-1 + x) + -4x = 7 + -7(x + 7) (-1 * -3 + x * -3) + -4x = 7 + -7(x + 7) (3 + -3x) + -4x = 7 + -7(x + 7) Combine like terms: -3x + -4x = -7x 3 + -7x = 7 + -7(x + 7) Reorder the terms: 3 + -7x = 7 + -7(7 + x) 3 + -7x = 7 + (7 * -7 + x * -7) 3 + -7x = 7 + (-49 + -7x) Combine like terms: 7 + -49 = -42 3 + -7x = -42 + -7x Add '7x' to each side of the equation. 3 + -7x + 7x = -42 + -7x + 7x Combine like terms: -7x + 7x = 0 3 + 0 = -42 + -7x + 7x 3 = -42 + -7x + 7x Combine like terms: -7x + 7x = 0 3 = -42 + 0 3 = -42 Solving 3 = -42 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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