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[(1/15+1/20)*12%1]*(1/15)怎么算等于多少

[(7/60)*12-1]*(1/15) =(7/5-1)*(1/15) =(2/5)*(1/15) =2/75

1÷(1/15+1/10)=6 1÷(1/15+1/10)=6 1÷(1/20+1/30)=12

1÷(1/15+1/12) =1÷3/20 =1×20/3 =20/3

15/12加(4/15-1/20) = 5/4 - 1/20 + 4/15 = (25/20-1/20) + 4/15 = 24/20+4/15 = 6/5+4/15 = 18/15+4/15 = 22/15

5/12+4/15-1/20的和简便计算 =25/60+16/60-3/60 =38/60 =19/30

5x2/15+1/20-5/12 =2/3-5/12+1/20 =(8-5)/12+1/20 =1/4+1/20 =3/10 如有帮助请采纳, 如对本题有疑问可追问,Good luck!

整数部分是 0

15-[1-(-20-4)] =15-[1+24] =15-25 =-10 四分之三-(-六分之十一)+(-三分之七) =3/4+11/6-7/3 =9/12+22/12-28/12 =3/12 =1/4

0.66877140317543

=-1.5+11.5=10=15-[1-(-24)]=15-(1+24)=15-25=-10(22.54-12.54)-4.4+4.4=10

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