是3道题吧?
1、9/11×3/22+1/2×2/11+(11/9,此处似乎应为9/11)×8/22=9/11×(3/22+8/22)+1/2×2/11=1/2×(9/11+2/11)=1/2
2、(5/6-4/15+7/10)×30=25-8+21=38
3、 (96/13+6/13)/(9/26-2/3(这里不是3/2?))=(96+6)/(9/26×13-3/2×13)=102/(9/2-39/2)=-102/15=-6.8
是3道题吧?
1、9/11×3/22+1/2×2/11+(11/9,此处似乎应为9/11)×8/22=9/11×(3/22+8/22)+1/2×2/11=1/2×(9/11+2/11)=1/2
2、(5/6-4/15+7/10)×30=25-8+21=38
3、 (96/13+6/13)/(9/26-2/3(这里不是3/2?))=(96+6)/(9/26×13-3/2×13)=102/(9/2-39/2)=-102/15=-6.8