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Simplifying 7x + -9 = 7(x + 1) Reorder the terms: -9 + 7x = 7(x + 1) Reorder the terms: -9 + 7x = 7(1 + x) -9 + 7x = (1 * 7 + x * 7) -9 + 7x = (7 + 7x) Add '-7x' to each side of the equation. -9 + 7x + -7x = 7 + 7x + -7x Combine like terms: 7x + -7x = 0 -9 + 0 = 7 + 7x + -7x -9 = 7 + 7x + -7x Combine like terms: 7x + -7x = 0 -9 = 7 + 0 -9 = 7 Solving -9 = 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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