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Simplifying 6x + -2x + 15 = 4(x + 1) Reorder the terms: 15 + 6x + -2x = 4(x + 1) Combine like terms: 6x + -2x = 4x 15 + 4x = 4(x + 1) Reorder the terms: 15 + 4x = 4(1 + x) 15 + 4x = (1 * 4 + x * 4) 15 + 4x = (4 + 4x) Add '-4x' to each side of the equation. 15 + 4x + -4x = 4 + 4x + -4x Combine like terms: 4x + -4x = 0 15 + 0 = 4 + 4x + -4x 15 = 4 + 4x + -4x Combine like terms: 4x + -4x = 0 15 = 4 + 0 15 = 4 Solving 15 = 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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