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Simplifying 7x + 15 + -4x = 3(x + -5) Reorder the terms: 15 + 7x + -4x = 3(x + -5) Combine like terms: 7x + -4x = 3x 15 + 3x = 3(x + -5) Reorder the terms: 15 + 3x = 3(-5 + x) 15 + 3x = (-5 * 3 + x * 3) 15 + 3x = (-15 + 3x) Add '-3x' to each side of the equation. 15 + 3x + -3x = -15 + 3x + -3x Combine like terms: 3x + -3x = 0 15 + 0 = -15 + 3x + -3x 15 = -15 + 3x + -3x Combine like terms: 3x + -3x = 0 15 = -15 + 0 15 = -15 Solving 15 = -15 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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