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Simplifying 79 + 30x = 400 + 30x Add '-30x' to each side of the equation. 79 + 30x + -30x = 400 + 30x + -30x Combine like terms: 30x + -30x = 0 79 + 0 = 400 + 30x + -30x 79 = 400 + 30x + -30x Combine like terms: 30x + -30x = 0 79 = 400 + 0 79 = 400 Solving 79 = 400 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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