Question

Найдите значение выражений

Answer 1

1/2+7/12=6/12+7/12=13/12=1 1/12
2/5+3/7=14/35+15/35=29/35
3/4+1/8=6/8+1/8=7/8
2/7+1/2=4/14+7/14=11/14
14/15-1/3=14/15-5/15=9/15
1/3-5/18=6/18-5/18=1/18
1/2-3/20=10/20-3/20=7/20
1/7-1/10=10/70-7/70=3/70