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Simplifying 3(5x + -7) = 5(3x + 4) Reorder the terms: 3(-7 + 5x) = 5(3x + 4) (-7 * 3 + 5x * 3) = 5(3x + 4) (-21 + 15x) = 5(3x + 4) Reorder the terms: -21 + 15x = 5(4 + 3x) -21 + 15x = (4 * 5 + 3x * 5) -21 + 15x = (20 + 15x) Add '-15x' to each side of the equation. -21 + 15x + -15x = 20 + 15x + -15x Combine like terms: 15x + -15x = 0 -21 + 0 = 20 + 15x + -15x -21 = 20 + 15x + -15x Combine like terms: 15x + -15x = 0 -21 = 20 + 0 -21 = 20 Solving -21 = 20 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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