Question

Найдите значение суммы или разность 1/6+7/10=
1/2+0,005=
1/2-0,4=
1/6-1/12=
8/25-0,2=
0,2+2/25=
2/25+1/9=
0,7+1/5=
0,3+2/5=
3/4-31/42=
3/4-0,15=
9/20-0,45=
7/12+3/20=
19/50+0,02=
1/6-0,1=
19/21-5/6=
4/5+0,3=
0,05+11/20=
34/45-7/10=
0,45-1/4=
1/10-1/12=
4/21+9/14=
1/20+0,25=
9/25-0,2=
4/9+17/63=
1/8-1/9=
3/4+0,1=
4/9+17/63=
1/8-1/9=
3/4+0,1=
11/24-7/16=
13/20+0,4=
0,25-1/20=

Answer 1

$\frac{1}{6}+\frac{7}{10}=\frac{5+21}{30}=\frac{26}{30}=\frac{13}{15}frac{1}{2}+0,005=\frac{1}{2}+\frac{1}{200}=\frac{101}{200}frac{1}{2}-0,4=\frac{1}{2}-\frac{2}{5}=\frac{1}{10}frac{1}{6}-\frac{1}{12}=\frac{2-1}{12}=\frac{1}{12}frac{8}{25}-0,2=\frac{8}{25}-\frac{1}{5}=\frac{3}{25}0,2+\frac{2}{25}=\frac{1}{5}+\frac{2}{25}=\frac{7}{25}frac{2}{25}+\frac{1}{9}=\frac{18+25}{225}=\frac{43}{225}0,7+\frac{1}{5}=\frac{7}{10}+\frac{1}{5}=\frac{9}{10}$

$0,3+\frac{2}{5}=\frac{7}{10}+\frac{2}{5}=\frac{11}{10}frac{3}{4}-\frac{31}{42}=\frac{63-62}{84}=\frac{1}{84}frac{3}{4}-0,15=\frac{3}{4}-\frac{3}{20}=\frac{3}{5}frac{9}{20}-0,45=\frac{9}{20}-\frac{9}{20}=0frac{7}{12}+\frac{3}{20}=\frac{35+9}{60}=\frac{44}{60}=\frac{11}{15}frac{19}{50} +0,02=\frac{10}{50}+\frac{1}{50}=\frac{11}{50}$

сейчас еще дорешаю,