Question

(1/30-5/6)-(-3,9-2,2)-5,3

Answer 1

$1) frac{1}{30} - frac{5}{6} = frac{30-25}{30} = frac{5}{30} = frac{1}{6} \ 2)-3,9-2,2=-6,1 \ 3) frac{1}{6} -(-6,1)= frac{1}{6} + frac{61}{10} = frac{5+183}{30} = frac{188}{30} \ 4) frac{188}{30} -5,3= frac{188}{30} - frac{53}{10} = frac{188-159}{30} = frac{29}{30} \ \ \ ( frac{1}{30} - frac{5}{6} )-(-3,9-2,2)-5,3=( frac{1}{30} - frac{5}{6} )+3,9+2,2-5,3=$$frac{30-25}{30} +0,8= frac{1}{6} +0,8= frac{1}{6} + frac{8}{10} = frac{5+24}{30} = frac{29}{30}$

Answer 2

1)1/30-5/6=1/30-25/30=-24/30=-12/15
2)-3,9-2,2=-6,1
3)-12/15-6 целых 1/10=-27/30
4)-27/30-5,3/10=-11 целых 1/30 вот так както