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Simplifying 7x + 8x + -7 = 3(5x + 5) Reorder the terms: -7 + 7x + 8x = 3(5x + 5) Combine like terms: 7x + 8x = 15x -7 + 15x = 3(5x + 5) Reorder the terms: -7 + 15x = 3(5 + 5x) -7 + 15x = (5 * 3 + 5x * 3) -7 + 15x = (15 + 15x) Add '-15x' to each side of the equation. -7 + 15x + -15x = 15 + 15x + -15x Combine like terms: 15x + -15x = 0 -7 + 0 = 15 + 15x + -15x -7 = 15 + 15x + -15x Combine like terms: 15x + -15x = 0 -7 = 15 + 0 -7 = 15 Solving -7 = 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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