You can put this solution on YOUR website! THE SUM OF A NUMBER AND THE DIFFERENCE BETWEEN 16 AND A NUMBER PLUS 5 IS 21
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Equation:
Let the number be "x":
x + (16-(x+5)) = 21
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x + 21 - x = 21
21 = 21
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Solution: x can be any Real Number
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Cheers,
Stan H.