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Simplifying 42x + 84 = 42x + 100 Reorder the terms: 84 + 42x = 42x + 100 Reorder the terms: 84 + 42x = 100 + 42x Add '-42x' to each side of the equation. 84 + 42x + -42x = 100 + 42x + -42x Combine like terms: 42x + -42x = 0 84 + 0 = 100 + 42x + -42x 84 = 100 + 42x + -42x Combine like terms: 42x + -42x = 0 84 = 100 + 0 84 = 100 Solving 84 = 100 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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