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Simplifying 7x + 2(x + -2) = 3(3x + 4) Reorder the terms: 7x + 2(-2 + x) = 3(3x + 4) 7x + (-2 * 2 + x * 2) = 3(3x + 4) 7x + (-4 + 2x) = 3(3x + 4) Reorder the terms: -4 + 7x + 2x = 3(3x + 4) Combine like terms: 7x + 2x = 9x -4 + 9x = 3(3x + 4) Reorder the terms: -4 + 9x = 3(4 + 3x) -4 + 9x = (4 * 3 + 3x * 3) -4 + 9x = (12 + 9x) Add '-9x' to each side of the equation. -4 + 9x + -9x = 12 + 9x + -9x Combine like terms: 9x + -9x = 0 -4 + 0 = 12 + 9x + -9x -4 = 12 + 9x + -9x Combine like terms: 9x + -9x = 0 -4 = 12 + 0 -4 = 12 Solving -4 = 12 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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