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