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Simplifying 2x + -1(9x + 8) = 4 + -7x Reorder the terms: 2x + -1(8 + 9x) = 4 + -7x 2x + (8 * -1 + 9x * -1) = 4 + -7x 2x + (-8 + -9x) = 4 + -7x Reorder the terms: -8 + 2x + -9x = 4 + -7x Combine like terms: 2x + -9x = -7x -8 + -7x = 4 + -7x Add '7x' to each side of the equation. -8 + -7x + 7x = 4 + -7x + 7x Combine like terms: -7x + 7x = 0 -8 + 0 = 4 + -7x + 7x -8 = 4 + -7x + 7x Combine like terms: -7x + 7x = 0 -8 = 4 + 0 -8 = 4 Solving -8 = 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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