280
20
Which you don't want. You want the least common denominator, which is 360.
Somone put 30, but seven doesnt go into it
168
To subtract seven tenths from eight fifteens, first convert both fractions to a common denominator. The least common multiple of 10 and 15 is 30. Therefore, seven tenths becomes 21/30 and eight fifteens becomes 16/30. Subtracting these gives you 21/30 - 16/30 = 5/30, which simplifies to 1/6.
168.
8
Fourteenths (eight and seven)
20
8
It is 48
24
That depends on the other denominator. You need at least two.
That depends on the other denominator. You need at least two.
Which you don't want. You want the least common denominator, which is 360.
Somone put 30, but seven doesnt go into it
the common denominator for 9/8 and 7/20 is 40. (45/40 and 14/40)