Indices, SMB-030 Find the reciprocal of `1/a + 1/b -c/(ab)`. (3 marks) Show Answers Only `(ab)/(a+b-c)` Show Worked Solution `1/a + 1/b -c/(ab)` `=b/(ab)+a/(ab)-c/(ab)` `=(b+a-c)/(ab)` `text(Reciprocal of)\ \ x = x^(-1)` `:.\ text(Reciprocal of)\ \ (b+a-c)/(ab)=>((b+a-c)/(ab))^(-1)=(ab)/(a+b-c)`