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Simplifying 7(x + 3) + -3x = 2(2x + 2) + -11 Reorder the terms: 7(3 + x) + -3x = 2(2x + 2) + -11 (3 * 7 + x * 7) + -3x = 2(2x + 2) + -11 (21 + 7x) + -3x = 2(2x + 2) + -11 Combine like terms: 7x + -3x = 4x 21 + 4x = 2(2x + 2) + -11 Reorder the terms: 21 + 4x = 2(2 + 2x) + -11 21 + 4x = (2 * 2 + 2x * 2) + -11 21 + 4x = (4 + 4x) + -11 Reorder the terms: 21 + 4x = 4 + -11 + 4x Combine like terms: 4 + -11 = -7 21 + 4x = -7 + 4x Add '-4x' to each side of the equation. 21 + 4x + -4x = -7 + 4x + -4x Combine like terms: 4x + -4x = 0 21 + 0 = -7 + 4x + -4x 21 = -7 + 4x + -4x Combine like terms: 4x + -4x = 0 21 = -7 + 0 21 = -7 Solving 21 = -7 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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