Answer:
1/30
Step-by-step explanation:
we need to first find the LCM of 10 and 3 which is 30 so the denominator is 30
10 X 3 is 30 so 7 X 3 is 21 so 21/30;
3 X 10 is 30 2 X 10 is 20 so 20/30;
Now we subtract 21-20/30
hence the answer is 1/30
