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Simplifying -4(x + -3) + 7 = 3x + -7x + -4 Reorder the terms: -4(-3 + x) + 7 = 3x + -7x + -4 (-3 * -4 + x * -4) + 7 = 3x + -7x + -4 (12 + -4x) + 7 = 3x + -7x + -4 Reorder the terms: 12 + 7 + -4x = 3x + -7x + -4 Combine like terms: 12 + 7 = 19 19 + -4x = 3x + -7x + -4 Reorder the terms: 19 + -4x = -4 + 3x + -7x Combine like terms: 3x + -7x = -4x 19 + -4x = -4 + -4x Add '4x' to each side of the equation. 19 + -4x + 4x = -4 + -4x + 4x Combine like terms: -4x + 4x = 0 19 + 0 = -4 + -4x + 4x 19 = -4 + -4x + 4x Combine like terms: -4x + 4x = 0 19 = -4 + 0 19 = -4 Solving 19 = -4 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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