Вычислите: 1\2 +1\3 , 1\3-14 , 1\4+1\5 , 1\5-1\6 , 1\6+1\7 , 1\7-1\8

Question

Вычислите: 1\2 +1\3 , 1\3-14 , 1\4+1\5 , 1\5-1\6 , 1\6+1\7 , 1\7-1\8

Answer 1

1/2+1/3=3+2/6=5/6
1/3-14=13(2/3)
1/4+1/5=9/20
1/5-1/6=1/30
1/7-1/8=1/56