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Simplifying 7(7x + 3) + 7 = 49x + -28 Reorder the terms: 7(3 + 7x) + 7 = 49x + -28 (3 * 7 + 7x * 7) + 7 = 49x + -28 (21 + 49x) + 7 = 49x + -28 Reorder the terms: 21 + 7 + 49x = 49x + -28 Combine like terms: 21 + 7 = 28 28 + 49x = 49x + -28 Reorder the terms: 28 + 49x = -28 + 49x Add '-49x' to each side of the equation. 28 + 49x + -49x = -28 + 49x + -49x Combine like terms: 49x + -49x = 0 28 + 0 = -28 + 49x + -49x 28 = -28 + 49x + -49x Combine like terms: 49x + -49x = 0 28 = -28 + 0 28 = -28 Solving 28 = -28 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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