1)(9.51+5.12)÷4.18+60.86÷8.5=14.63÷4.18+7.16=3.5+7.16=10.66
2)(2.4×(9.5-6.85)÷(3.64+1.66))÷0.6=(2.4×2.65÷5.3)÷0.6=1.2÷0.6=2
3)((17.65-9.25)×2.5-3.9×0.4)÷2.43=(8.4×2.5-1.56)÷2.43=(21-1.56)÷2.43=19.44÷2.43=8
4)15.96÷5.7×0.5+(13.25-8.35)×2.5÷7=1.4+4.9×2.5÷7=1.4+1.75=3.15