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Simplifying 7 + -3x = 3(3 + -1x) + 4 7 + -3x = (3 * 3 + -1x * 3) + 4 7 + -3x = (9 + -3x) + 4 Reorder the terms: 7 + -3x = 9 + 4 + -3x Combine like terms: 9 + 4 = 13 7 + -3x = 13 + -3x Add '3x' to each side of the equation. 7 + -3x + 3x = 13 + -3x + 3x Combine like terms: -3x + 3x = 0 7 + 0 = 13 + -3x + 3x 7 = 13 + -3x + 3x Combine like terms: -3x + 3x = 0 7 = 13 + 0 7 = 13 Solving 7 = 13 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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