(5/9+1/36)*9+3/4 =5/9*9+1/36*9+3/4=5+(1/4+3/4)=5+1=6(5/12+1/6)/(2/5*7/8) =7/12÷7/8÷2/5=2/3÷2/5=5/37.6/13+5.4*1/13 =(7.6+5.4)*1/13=13*1/13=15/6/{(0.5-3/16)*8/9}=5/6÷{5/16*8/9}=5/6÷5/18=3