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Simplifying 3 + -9x = 15 + -9x Add '9x' to each side of the equation. 3 + -9x + 9x = 15 + -9x + 9x Combine like terms: -9x + 9x = 0 3 + 0 = 15 + -9x + 9x 3 = 15 + -9x + 9x Combine like terms: -9x + 9x = 0 3 = 15 + 0 3 = 15 Solving 3 = 15 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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