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Simplifying 3(2x + 1) + x = 4x + -1(3 + -3x) Reorder the terms: 3(1 + 2x) + x = 4x + -1(3 + -3x) (1 * 3 + 2x * 3) + x = 4x + -1(3 + -3x) (3 + 6x) + x = 4x + -1(3 + -3x) Combine like terms: 6x + x = 7x 3 + 7x = 4x + -1(3 + -3x) 3 + 7x = 4x + (3 * -1 + -3x * -1) 3 + 7x = 4x + (-3 + 3x) Reorder the terms: 3 + 7x = -3 + 4x + 3x Combine like terms: 4x + 3x = 7x 3 + 7x = -3 + 7x Add '-7x' to each side of the equation. 3 + 7x + -7x = -3 + 7x + -7x Combine like terms: 7x + -7x = 0 3 + 0 = -3 + 7x + -7x 3 = -3 + 7x + -7x Combine like terms: 7x + -7x = 0 3 = -3 + 0 3 = -3 Solving 3 = -3 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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