4.2/9+3.4/9-6.5/9_____3-2.3/11+2.5/11_____(8.1/8-5.7/8)+2.5/8

4.2/9+3.4/9-6.5/9=1.1/9   1)4.2/9+3.4/9=7.6/92)7.6/9-6.5/9=1.1/93-2.3/11+2.5/11= -1.8/111)2.3/11+2.5/11=4.8/112)3-4.8/11= -1.8/11(8.1/8-5.7/8)+2.5/8=4.7/81)8.1/8-5.7/8=2.1/42)2.1/4+2.5/8=4.7/8