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Simplifying 7(x + 3) = 4(x + 2) + 3x Reorder the terms: 7(3 + x) = 4(x + 2) + 3x (3 * 7 + x * 7) = 4(x + 2) + 3x (21 + 7x) = 4(x + 2) + 3x Reorder the terms: 21 + 7x = 4(2 + x) + 3x 21 + 7x = (2 * 4 + x * 4) + 3x 21 + 7x = (8 + 4x) + 3x Combine like terms: 4x + 3x = 7x 21 + 7x = 8 + 7x Add '-7x' to each side of the equation. 21 + 7x + -7x = 8 + 7x + -7x Combine like terms: 7x + -7x = 0 21 + 0 = 8 + 7x + -7x 21 = 8 + 7x + -7x Combine like terms: 7x + -7x = 0 21 = 8 + 0 21 = 8 Solving 21 = 8 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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