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1除以7加2除以7用分表达答案,用脱式计算

7/9÷2/3+2/9 =7/9×3/2+2/9 =7/6+2/9 =21/18+4/18 =25/18

16

十八点二减十一除以七加七分之一乘以四 =18.2-11/7+4/7 =18.2-(11/7-4/7) =18.2-1 =17.2

(1/2×6+5/6÷2/7)÷(1/10) =(3+35/12)X10 =(36/12+35/12)X10 =71/12X10 =71X5/6 =355/6

red

7分之6乘5分之4减3分之2的差除以5分之1=((6/7)*(4/5)-2/3)÷(1/5)=(24/35-2/3)*5=24/7-10/3=72/21-70/21=2/21;4分之3减4分之3乘7分之4加7分之3=3/4-(3/4)*(4/7)+3/7=(3/4)...

27+36=63,63除以9=7,所以答案为;7,望采纳,谢谢

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