Question

вычислите: 
a)3/14+5/21
б)7/8-0,4
в)2/3-(4/7-1/6)

Answer 1

а) 3/14+5/21=9/42+10/42=19/42
б) 7/8-4/10=35/40-16/40=19/40
в) 2/3-4/7+1/6=28/42-24/42+7/42=11/42