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Simplifying -4(x + -3) + -3x = 3 + -7(x + 4) Reorder the terms: -4(-3 + x) + -3x = 3 + -7(x + 4) (-3 * -4 + x * -4) + -3x = 3 + -7(x + 4) (12 + -4x) + -3x = 3 + -7(x + 4) Combine like terms: -4x + -3x = -7x 12 + -7x = 3 + -7(x + 4) Reorder the terms: 12 + -7x = 3 + -7(4 + x) 12 + -7x = 3 + (4 * -7 + x * -7) 12 + -7x = 3 + (-28 + -7x) Combine like terms: 3 + -28 = -25 12 + -7x = -25 + -7x Add '7x' to each side of the equation. 12 + -7x + 7x = -25 + -7x + 7x Combine like terms: -7x + 7x = 0 12 + 0 = -25 + -7x + 7x 12 = -25 + -7x + 7x Combine like terms: -7x + 7x = 0 12 = -25 + 0 12 = -25 Solving 12 = -25 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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