Answer:
5/7 = 0.714285714
Divide 2/5 by 21/25 by multiplying 3/5 by the reciprocal of 21/25
3/5*(25/21)
Multiply
3/ 5 times 25/21 by multiplying numerator times numerator and denominator times denominator.
3 * 25 = 75
5 * 21 = 105
Reduce the fraction
75/ 105 to lowest terms by extracting and canceling out 15.
answer :5/7 0r 0.714285714
Hopefully i helped :)