273.
Another way of stating this is if x/21=13, what is x?
You can find x by multiplying both sides on the equation by 21. You'll end up with x=273.
0.0667
I presume you don't mean 21 minus 13; that is easy enough, and equals 8. If you mean the ratio 13/21, all you do is divide. The answer is 0.1690___.
Just divide 13 by 16 - for example, on a calculator. This will give you the equivalent decimal.
Divide by 3, 7 and 13. 1, 3, 7, 13, 21, 39, 91, 273
take 7 then divide by 11 get an answer then divide that answer by 21
Divide 42 by 2 to give you 21.
0.0667
I presume you don't mean 21 minus 13; that is easy enough, and equals 8. If you mean the ratio 13/21, all you do is divide. The answer is 0.1690___.
1 x 21 3 x 7
0.0404
Add them together and divide by 6.
divide by 21
Just divide 13 by 16 - for example, on a calculator. This will give you the equivalent decimal.
Divide by 3, 7 and 13. 1, 3, 7, 13, 21, 39, 91, 273
Add the 4 numbers together and divide by 4, the answer is 17.
It is easy enough to divide by 3, to give the exact quotient as 7.3
21 divide into 6450 = 0.0032558139534883722