Question

Addition of unlike fractions
5/3+7/4
8 2/5 + 4 3/9
Subtraction of unlike fractions
5/3-1/4
1 2/5 - 2 3/4​

Answer 1

Answer:

5/3+7/4

LCM of 3 and 4 is 12

5×4/3×4 + 7×3/4×3

20/12 + 21/12

20+21/12

41/12

8 2/5 + 4 3/9

42/5+39/9

LCM is 45

42×9/5×9 + 39×5/9×5

378/45 + 195/45

388+195/45

573/45

Step-by-step explanation:

5/3 - 1/4

LCM is 12

5×4/3×4 - 1×3/4×3

20/12-3/12

20-3/12

17/12

1 2/5-2 3/4

11/5 - 11/4

LCM is 29

11×4/5×4 - 11×5/4×5

44/20 - 55/20

44-55/20

-11/20