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Simplifying -2x + 7 = 4x + -3(2x + 7) Reorder the terms: 7 + -2x = 4x + -3(2x + 7) Reorder the terms: 7 + -2x = 4x + -3(7 + 2x) 7 + -2x = 4x + (7 * -3 + 2x * -3) 7 + -2x = 4x + (-21 + -6x) Reorder the terms: 7 + -2x = -21 + 4x + -6x Combine like terms: 4x + -6x = -2x 7 + -2x = -21 + -2x Add '2x' to each side of the equation. 7 + -2x + 2x = -21 + -2x + 2x Combine like terms: -2x + 2x = 0 7 + 0 = -21 + -2x + 2x 7 = -21 + -2x + 2x Combine like terms: -2x + 2x = 0 7 = -21 + 0 7 = -21 Solving 7 = -21 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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