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Simplifying 2(x + 7) + 7 = 7x + -5(x + -3) Reorder the terms: 2(7 + x) + 7 = 7x + -5(x + -3) (7 * 2 + x * 2) + 7 = 7x + -5(x + -3) (14 + 2x) + 7 = 7x + -5(x + -3) Reorder the terms: 14 + 7 + 2x = 7x + -5(x + -3) Combine like terms: 14 + 7 = 21 21 + 2x = 7x + -5(x + -3) Reorder the terms: 21 + 2x = 7x + -5(-3 + x) 21 + 2x = 7x + (-3 * -5 + x * -5) 21 + 2x = 7x + (15 + -5x) Reorder the terms: 21 + 2x = 15 + 7x + -5x Combine like terms: 7x + -5x = 2x 21 + 2x = 15 + 2x Add '-2x' to each side of the equation. 21 + 2x + -2x = 15 + 2x + -2x Combine like terms: 2x + -2x = 0 21 + 0 = 15 + 2x + -2x 21 = 15 + 2x + -2x Combine like terms: 2x + -2x = 0 21 = 15 + 0 21 = 15 Solving 21 = 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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