When you have minus negative it is the same result as plus positive, so 3+4 is what you're looking for
11 / 12 - 8 / 12 = 3 / 12 = 1/4 square meters;
Yes. That statement is true.
For example in : (1/2) divided by (3/4), you would invert 3/4 to make 4/3 and change the divide symbol to the multiply symbol. Becoming:
(1/2) multiplied by (4/3)<em> = </em><em>(1/2) divided by (3/4) = 0.66r</em>