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Simplifying 2x + -1(9x + 7) = 6 + -7x Reorder the terms: 2x + -1(7 + 9x) = 6 + -7x 2x + (7 * -1 + 9x * -1) = 6 + -7x 2x + (-7 + -9x) = 6 + -7x Reorder the terms: -7 + 2x + -9x = 6 + -7x Combine like terms: 2x + -9x = -7x -7 + -7x = 6 + -7x Add '7x' to each side of the equation. -7 + -7x + 7x = 6 + -7x + 7x Combine like terms: -7x + 7x = 0 -7 + 0 = 6 + -7x + 7x -7 = 6 + -7x + 7x Combine like terms: -7x + 7x = 0 -7 = 6 + 0 -7 = 6 Solving -7 = 6 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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