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Simplifying 21 + x = (52 + x) Remove parenthesis around (52 + x) 21 + x = 52 + x Add '-1x' to each side of the equation. 21 + x + -1x = 52 + x + -1x Combine like terms: x + -1x = 0 21 + 0 = 52 + x + -1x 21 = 52 + x + -1x Combine like terms: x + -1x = 0 21 = 52 + 0 21 = 52 Solving 21 = 52 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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