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Simplifying 7 + 6x = 20 + 6x Add '-6x' to each side of the equation. 7 + 6x + -6x = 20 + 6x + -6x Combine like terms: 6x + -6x = 0 7 + 0 = 20 + 6x + -6x 7 = 20 + 6x + -6x Combine like terms: 6x + -6x = 0 7 = 20 + 0 7 = 20 Solving 7 = 20 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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