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Simplifying 7(x + 2) + -9 = 7x + 4 Reorder the terms: 7(2 + x) + -9 = 7x + 4 (2 * 7 + x * 7) + -9 = 7x + 4 (14 + 7x) + -9 = 7x + 4 Reorder the terms: 14 + -9 + 7x = 7x + 4 Combine like terms: 14 + -9 = 5 5 + 7x = 7x + 4 Reorder the terms: 5 + 7x = 4 + 7x Add '-7x' to each side of the equation. 5 + 7x + -7x = 4 + 7x + -7x Combine like terms: 7x + -7x = 0 5 + 0 = 4 + 7x + -7x 5 = 4 + 7x + -7x Combine like terms: 7x + -7x = 0 5 = 4 + 0 5 = 4 Solving 5 = 4 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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