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