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Simplifying 3x + -10x + 20 = 13 + -7x Reorder the terms: 20 + 3x + -10x = 13 + -7x Combine like terms: 3x + -10x = -7x 20 + -7x = 13 + -7x Add '7x' to each side of the equation. 20 + -7x + 7x = 13 + -7x + 7x Combine like terms: -7x + 7x = 0 20 + 0 = 13 + -7x + 7x 20 = 13 + -7x + 7x Combine like terms: -7x + 7x = 0 20 = 13 + 0 20 = 13 Solving 20 = 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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