Question

Please answer this Answer is a+b but how??

Answer 1

Answer:

a+b

Step-by-step explanation:

a^-1=1/a

similarly,

b^-1=1/b and,

(ab)^-1=1/ab

so,

1/a +1/b

------------

1/ab

find lcm of 1/a +1/b

we'll get  a+b/ab

                ----------

               1/ab

cancel ab from num and denominator

u'll get a+b