No becuase if you simplify the fractions, it would turn out as the 4/5 = 12/15 and the 2/3 = 10/15
-12 + 6 - 10 - 6 +15 = -7
12/30 = 2/5
11/12
12 and 10/8 = 13 and 2/8 = 131/4
4/12 + 11/15 = 1 1/15
12/15 = 4/5
12/15 equals 0.8
Evidently, 12 over 6 is an improper fraction and you can simplify this by dividing the denominator and numerator by 6 (a number that goes into both the denominator and numerator). This gives you 2/1, which as a mixed number is 2.It's 2 basically
11*15/45 = 0.33... recurring. You could simplify 15/45 to 1/3 if you wanted.
seventeen over fifteen because the common denominator of 5 and 3 is 15 think about it like this: 4/5x3, 4x3=12, 5x3=15 1/3x5, 1x5=5, 3x5=15 so you get 12/15+5/15 see how they simplify back? then add the numerators and keep the denominator and you get 17/15 or 1 and 2/15
Divide the numerator and the denominator by their greatest common factor. In this fraction, that's 15.