Question

(3/5+3/7-3/11)/(4/5+4/7-4/11) = ?

Answer 1

=3(1/5+1/7-1/11)/4(1/5+1/7-1/11)

=3/4

Answer 2

(3/5+3/7-3/11)/(4/5+4/7-4/11)

=(21/35+15/35-3/11)/(4/5+4/7-4/11)

=(36/35-3/11)/(4/5+4/7-4/11)

=(396/385-105/385)/(4/5+4/7-4/11)

=(291/385)/(4/5+4/7-4/11)

=(291/385)/(28/35+20/35-4/11)

=(291/385)/(48/35-4/11)

=(291/385)/(528/385-140/385)

=(291/385)/(388/385)

=(291/385):(388/385)

=(291/385)x(385/388)

=112035/149380

=3/4

 

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