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Simplifying 9x + -7 = 9(x + 4) Reorder the terms: -7 + 9x = 9(x + 4) Reorder the terms: -7 + 9x = 9(4 + x) -7 + 9x = (4 * 9 + x * 9) -7 + 9x = (36 + 9x) Add '-9x' to each side of the equation. -7 + 9x + -9x = 36 + 9x + -9x Combine like terms: 9x + -9x = 0 -7 + 0 = 36 + 9x + -9x -7 = 36 + 9x + -9x Combine like terms: 9x + -9x = 0 -7 = 36 + 0 -7 = 36 Solving -7 = 36 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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