0.381
21 multiplied by 8 is 168.
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
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
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)
21% of 8= 21% * 8= 0.21 * 8= 1.68
8 - (-21) = 8 + 21 = 29
-21
8% of 21 is 1.68
8 out of 21 is 38.1%
3/7 + 8/21 = 9/21 + 8/21 = 17/21
0.381
21/8 is in its simplest form.
21 + 8 / 5 = 21 + 8/5 = 21 + 13/5 = 223/5
21/8 = 2.625
21 :) x 8 ------ 168
The GCF of 8 and 21 is 1.