a) (-8/19)+(-2/57)
Detailed Solution :
Finding a common denominator for the percentages is the first step. 57 is the least frequent three between 19 and. As a result, we change- 8/ 19 to -24/ 57. The two fractions are then added:
-24/57 + -2/57 = -26/57
b) (-6/13)-(-7/13)
Detailed Solution :
Since the denominators are identical, we can easily subtract the numerators:
-6 - (-7) = -6 + 7 = 1
So, the result is 1/13.
c) (5/63)-(-8/21)
Detailed Solution :
To proceed, we must first find a common denominator for the fractions. In this case, the least common multiple of 63 and 21 is 63. Therefore, we can rewrite 8/21 as 24/63. After that, we can subtract the two fractions.
5/63 - (-24/63) = 5/63 + 24/63 = 29/63
d) (13/5)-(12/25)
Detailed Solution :
To find the least common multiple of 5 and 25, we get 25. Next, we convert 13/5 to 65/25. After that, we subtract the two fractions.
65/25 - 12/25 = 53/25
However, 53/25 can be simplified to 2 3/25.