Six twelves is 72. 72 minus three fourths is 71 and one fourth. If you meant six twelfths minus three fourths, the answer is minus one fourth.
three fourths
8 7/12 - 7 3/4 = 5/6
0.125
H
seven twelfths
The answer is 21/4
seven sixteenths
No, they are not.
It is seven and three fourths.
Three twelves is 36. Four twelves is 48. 36 - 48 = -12. Three twelfths - fourth twelfths equals minus one twelfth.
It is 7 minus 3/4 = 6 and 1/4 or 6.25