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Grade 10Algebra

If
1/ba, 1/ca, 1/cb are in A.P,
then
2/ca = 1/ba + 1/cb
taking L.C.M abc and calculating we get,
again
2b = a + c.................(2)
hence eqn. (1) and (2) are similar therefore this series is also in A.P.
how take lcm

Profile image of rakshitha
8 Years agoGrade 10
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1 Answer

Profile image of Arun
8 Years ago
Dear student
 
If in equation 1,
If we multiply by abc then
a, b, c will also be in A. P.
Regards
Arun (askIITians forum expert)