1)1-5/6+2/3 2)3/4-4/5+-17/20 3)-6/8.24/18-5/9 4)-5/18+5/9-11/36 5)-5/-15+9/7+1/-3–276/14 6)9/11-7/8+13/11+-1/8

0 bình luận về “1)1-5/6+2/3 2)3/4-4/5+-17/20 3)-6/8.24/18-5/9 4)-5/18+5/9-11/36 5)-5/-15+9/7+1/-3–276/14 6)9/11-7/8+13/11+-1/8”

1. Đáp án + Giải thích các bước giải:

   `1) \ = 6/6-5/6+4/6=(6-5+4)/6=5/6`

   `2) \ =15/20-16/20+(-17)/20=(15-16-17)/20=-18/20=-9/10`

   `3) \ =(-1)-5/9=(-9)/9-5/9=(-9-5)/9=-14/9`

   `4) \ =-10/36+20/36-11/36=(-10+20-11)/36=-1/36`

   `5) \ = 1/3 + 9/7 + 1/-3 + 138/7 = (1/3+1/-3)+(9/7+138/7)=147/7=21`

   `6) \ =(9/11+13/11)+((-7)/8+(-1)/8)=22/11+(-8)/8=2-1=1`

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