Question

lf a = 4/5 and b= 3/-7, verify that a+b =b+a .​

Answer 1

given that a = 4/5 and b= 3/-7

a+b=b+a

4/5+3/-7=3/-7+4/5

take lcm of 5 and 7(- sign will go in numerator)

lcm is 35

28/35-15/35= -15/35+28/35

13/35= -13/35

they are not equal