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Simplifying 7x + -2(x + -3) = 2.5(2x + 4) Reorder the terms: 7x + -2(-3 + x) = 2.5(2x + 4) 7x + (-3 * -2 + x * -2) = 2.5(2x + 4) 7x + (6 + -2x) = 2.5(2x + 4) Reorder the terms: 6 + 7x + -2x = 2.5(2x + 4) Combine like terms: 7x + -2x = 5x 6 + 5x = 2.5(2x + 4) Reorder the terms: 6 + 5x = 2.5(4 + 2x) 6 + 5x = (4 * 2.5 + 2x * 2.5) 6 + 5x = (10 + 5x) Add '-5x' to each side of the equation. 6 + 5x + -5x = 10 + 5x + -5x Combine like terms: 5x + -5x = 0 6 + 0 = 10 + 5x + -5x 6 = 10 + 5x + -5x Combine like terms: 5x + -5x = 0 6 = 10 + 0 6 = 10 Solving 6 = 10 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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