Subtract 9 7/10-6 1/4 what is the difference

Question

15 19/20
3 1/2
3 9/20
2 9/20

Answer 1

To subtract 9 7/10 - 6 1/4, first convert both mixed numbers to improper fractions:

9 7/10 = (10*9 + 7)/10 = 97/10
6 1/4 = (4*6 + 1)/4 = 25/4

Now, subtract:

97/10 - 25/4 = (97*4 - 25*10)/(10*4) = (388 - 250)/40 = 138/40

Simplifying this fraction, we get:

138/40 = (3*46)/(5*8) = 3/5 * 46/8 = 3/5 * 23/4 = (3*23)/(5*4) = 69/20

Therefore, the difference between 9 7/10 and 6 1/4 is 69/20, which can also be expressed as 15 19/20.