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21 - 8 = 13
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Earn +20 ptsQ: What is 21 - 8?
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What is 21 times 8?
21 multiplied by 8 is 168.
What is 2 thirds plus 5 sevenths?
2/3 + 5/7 (the common denominator is 21, the LCM of 3 and 7) = 2*7/3*7 + 5*3/7*3 = 14/21 + 15/21 = (14 + 15)/21 = 29/21 = (21 + 8)/21 = 21/21 + 8/21 = 1 + 8/21 = 1 8/21
How do you simplify 6 over 7 divided by 8 over 21?
There are several possible interpretations of the question:(6/7) / (8/21)6 / [7/(8/21)]6 / [(7/8)/21]et ceteraAssuming it is the first of these, (6/7) / (8/21) = (6/7) * (21/8) = (3/7) * (21/4)= (3/1) * (3/4) = 9/4 or 21/4
How do you simplify 8 over 21?
8/21 cannot be simplified as there is no common factor to 8 & 21. It can be expressed as a decimal 0.3809523 (to 7 dps)
What is 21 divided by 8?
0.381
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