Simplify
A: -2
B: 7 2/3 - 5 1/4
C: 2 5/12
D: 2 11/12
Simplifying:
A: -2
B: To subtract mixed numbers, we need to find a common denominator first. The least common denominator of 3 and 4 is 12. So,
7 2/3 - 5 1/4 = (7 * 4/4) + 2/3 - (5 * 3/3) - 1/4
= 28/12 + 2/3 - 15/12 - 1/4
= (28 + 8) / 12 - (15 + 3) / 12
= 36/12 - 18/12
= 18/12
= 3/2
C: 2 5/12
D: 2 11/12