-16
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-26
maybe eight 21 - 5 = 16 = 2 x 8
The absolute value of 21 is 21.
5/7 - 5/21 = 15/21 - 5/21 = 10/215/7 - 5/21 = 15/21 - 5/21 = 10/215/7 - 5/21 = 15/21 - 5/21 = 10/215/7 - 5/21 = 15/21 - 5/21 = 10/21
The decimal value of 21 is simply 21. In decimal form, whole numbers remain the same, so the decimal value of 21 is 21.