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Simplifying -9x + 4 = 8 + -3(3x + -7) Reorder the terms: 4 + -9x = 8 + -3(3x + -7) Reorder the terms: 4 + -9x = 8 + -3(-7 + 3x) 4 + -9x = 8 + (-7 * -3 + 3x * -3) 4 + -9x = 8 + (21 + -9x) Combine like terms: 8 + 21 = 29 4 + -9x = 29 + -9x Add '9x' to each side of the equation. 4 + -9x + 9x = 29 + -9x + 9x Combine like terms: -9x + 9x = 0 4 + 0 = 29 + -9x + 9x 4 = 29 + -9x + 9x Combine like terms: -9x + 9x = 0 4 = 29 + 0 4 = 29 Solving 4 = 29 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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