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5.2减括号6% 2.4除以6括号等于多少

5.2-(6%+2.4÷6) =5.2-(0.06+0.4) =5.2-0.46 =4.74。

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

表述不清楚 ,无法作答

6+(7)=18-5=(15)-2 。结果都等于13

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

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

先算括号里的,再算括号外的

(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

-2/5+(3/8-1/6+7/12)x(-2.5)=-2/5-(9/24-4/24+14/24)x5/2=-2/5-19/24x5/2=-2/5-95/48=-96/240-475/240=-571/240 

5.2-(60%+2.4÷6) =5.2-(0.6+0.4) =5.2-1 =4.2

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