Question

if a=2/3 and b= 3/4 then find (a+b)/(a-b)

Answer 1

a=2/3,b=3/4
(a+b)(a-b)=a^2-b^2
=2/3^2-3/4^2
=4/9-9/16=
=64/144-81/144=-17/144 is answer
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