(64+1/17)/9 + (13+2/11 + 11+2/13)/(5/11+5/13)
= (64*17+1)/9 + ( (13*11+2)/11 + (11*13+2)/13 )/(5*(1/11+1/13))
= (64*17+1)/9 + ( (13*11+2)*(1/11+1/13) ) /(5*(1/11+1/13))
=(64*17+1)/9 + (13*11+2) /5
=( 64(18-1)+1)/9 + (13*(10+1)+2) /5
= (64*18 -63) /9 + (13*10+15)/5
=(64*2-7)+(13*2+3)
=128-7+26+3
=150