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5.2减括号6% 2.4除以6括号等于多少

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5/6-(2/5-1/6) =5/6-2/5+1/6 =(5/6+1/6)-2/5 =1-2/5 =3/5

5/16 ×[(2/5+2/3)÷5/6] = 5/16 ×[16/15×6/5] =5/16 ×16/15×6/5 =2/5

5/6减去括号,1/12加上2/15括回 化为数学式子即为5/6-(1/12+2/15) =50/60-(5/60+8/60) =50/60-13/60 =37/60

先算括号里的,再算括号外的

28/55 解析: (3/5-2/15)÷(1/12+5/6) =(7/15)÷(11/12) =(7/5)÷(11/4) =28/55

6+(7)=18-5=(15)-2 。结果都等于13

(3/4-1/8)×(5/6+2/3) =(6/8-1/8)×(5/6+4/6) =5/8×10/6 =25/24 =1又1/24

12/5×括号5/6+1/2括号减0.8 =(12/5)×(5/6+1/2) -0.8 =(12/5)×(8/6) -0.8 =16/5 - 0.8 =3.2-0.8 =2.4

1/6*2/5÷(5/6-3/4) =1/6*2/5÷1/12 =1/6*2/5*12 =4/5

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