Question

номер 182 с 1 по 4 срочно

Answer 1

3/8+5/8=(3+5)/8=8/8=1
1/7+2(2/7+3)=1/7+2*3 2/7=1/7+2*23/7=47/7=6 5/7
9-(5-3/10)=9-4 7/10=(90-47)/10=4310=4 3/10
4/5+2-(4/5-3/5)+1/5=4/5+2-1/5+1/5=2 4/5

Answer 2

 $1) frac{3}{8} + frac{5}{8} = frac{8}{8} =1 \ \ 2) frac{1}{7} +2( frac{2}{7} +3)= 6 frac{5}{7} \ 1) frac{2}{7} +3=3 frac{2}{7} = frac{23}{7} \ 2)2* frac{23}{7} = frac{46}{7} \ 3) frac{1}{7} + frac{46}{7} = frac{47}{7} =6 frac{5}{7} \ \ 3)9-(5- frac{3}{10} )=9-(5-0.3)=9-4.7=4.3$

$4) frac{4}{5} +2-( frac{4}{5} - frac{3}{5} )+ frac{1}{5} = frac{8}{10} +2-( frac{8}{10} - frac{6}{10} )+ frac{2}{10} = \ = frac{8}{10} +2- frac{2}{10} + frac{2}{10} = frac{8}{10} +2=0.8+2=2.8$