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1/2 2/3×括号3/4%1/6括号除以7/9脱式计算

1/2 2/3×括号3/4-1/6括号除以7/9脱式计算 解: 1/2+ 2/3×(3/4-1/6)除以7/9 =1/2+2/3×7/12÷7/9 =1/2+1/2 =1

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

6/7-6/7×(2/3+1/9) =6/7-6/7×7/9 =6/7×(1-7/9) =6/7×2/9 =4/21

35除9+47除9一7除9一12除9=多少,用脱式计算? 35÷9+47÷9-7÷9-12÷9 =(35+47-7-12)/9 =63/9 =7

你好,很高兴为你解答 2/7×9/2×7/9,,这样脱式计算 =9/7x7/9 =1 满意采纳哦!

(九又2/7-7又2/9)÷(5/9+5/9) =2又63分之4÷10/9 =130/63×9/10 =13/7 =1又7分之6

(-1-1/4×8/9)÷7/9 =(-1×9/7)-(1/4×9/7)×(8/9×9/7) =-9/7-9/28×8/7 =-36/28-9/28×8/7 =-36/28-36/98 =-63/49-18/49 =-81/49

直接用通分法即可: 原式=(3/8+1/4)+3/7-2/9 =(3+2)/8+3/7-2/9 =5/8+3/7-2/9 根据7,8,9最小公倍数是7×8×9=504 =(5×63+3×72-2×56)/504=419/504

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

1/6+1/5+1/2 =5/30+6/30+15/30 =11/30+15/30 =13/15

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