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1除以7加2除以7用分表达答案,用脱式计算

用脱式计算 1.53 +23.4÷7.2 =1.53+3.25 =4.78

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

同时乘以10

2/3-3/4×4/6+1/3÷3/7 =2/3-1/2+7/9 =1/6+7/9 =17/18

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

red

7.2÷1.6+0.8 =4.5+0.8 =5.3

4.2除以14,同时除以2等于2.1除以7,等于0.3

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