Дробь 1/2 +1/5 и 1/3+1/4

Question

Дробь 1/2 +1/5 и 1/3+1/4

Answer 1

1/2 +1/5=5/10+2/10=7/10

1/3+1/4=4/12+3/12=7/12

Answer 2

1/3+1/4=4/12+3/12=7/12 1/2+1/5=5/10+2/10=7/10=0,7