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Simplifying 7(x + 9) + 5 = 7x + 7 Reorder the terms: 7(9 + x) + 5 = 7x + 7 (9 * 7 + x * 7) + 5 = 7x + 7 (63 + 7x) + 5 = 7x + 7 Reorder the terms: 63 + 5 + 7x = 7x + 7 Combine like terms: 63 + 5 = 68 68 + 7x = 7x + 7 Reorder the terms: 68 + 7x = 7 + 7x Add '-7x' to each side of the equation. 68 + 7x + -7x = 7 + 7x + -7x Combine like terms: 7x + -7x = 0 68 + 0 = 7 + 7x + -7x 68 = 7 + 7x + -7x Combine like terms: 7x + -7x = 0 68 = 7 + 0 68 = 7 Solving 68 = 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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