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Simplifying 7 + -1(9x + 3) = -9x + -4 Reorder the terms: 7 + -1(3 + 9x) = -9x + -4 7 + (3 * -1 + 9x * -1) = -9x + -4 7 + (-3 + -9x) = -9x + -4 Combine like terms: 7 + -3 = 4 4 + -9x = -9x + -4 Reorder the terms: 4 + -9x = -4 + -9x Add '9x' to each side of the equation. 4 + -9x + 9x = -4 + -9x + 9x Combine like terms: -9x + 9x = 0 4 + 0 = -4 + -9x + 9x 4 = -4 + -9x + 9x Combine like terms: -9x + 9x = 0 4 = -4 + 0 4 = -4 Solving 4 = -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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