ответ:1/3+1/6=2/6+1/6=3/6=1/2=0.5
1/2+1/3=3/6+2/6=5/6
3/5-1/10=6/10-1/10=5/10=1/2=0.5
1/12+5/6=1/12+10/12=11/12.
1/3+1/4=4/12+3/12=7/12
1/3+2/5=5/15+6/15=11/15
1/2-1/4=2/4-1/4=1/4
1/4-1/5=5/20--4/20=1/20
1/2+3/7=7/14+6/14=13/14
3/4-1/8=6/8--1/8=5/8
1/5+1/6=6/30+5/30=11/30
4/15+2/5=4/15+6/15=10/15=2/3
7/10-1/2=7/10-5/10=2/10=1/5=0.2
1/3-1/4=4/12-3/12=1/12
1/3-1/6=2/6-1/6=1/6
3/20+3/4=3/20+15/20=18/20=9/10=0.9
7/9-2/3=7/9-6/9=1/9
1/4+1/5=5/20+4/20=9/20
2/5+4/15=6/15+4/15=10/15=2/3
1/3+1/4=4/12+3/12=7/12
2/3-1/5=10/15-3/15=7/15
1/5-1/6=6/30-5/30=1/30
1/2+1/4=2/4+1/4=3/4
7/6-1=7/6-6/6=1/6
1/2+2/7=7/14+4/14=11/14
1/2-1/3=3/6-2/6=1/6
3/4+1/8=6/8+1/8=7/8
5/6-7/12=10/12-7/12=3/12=1/4
2/5+3/10=4/10+3/10=7/10=0.7
Пошаговое объяснение:
381м²
Пошаговое объяснени
ВС= 24- 15 = 9м
СD= 20-9 = 11м
S= 20×24 - 11×9 = 381 м²