1) 340*5=1700
2)120:30=4
3)24160:4=6040
4)52060-1700=50260
5)50260+6040=56300
6)56300-44055=12245
Х=100/14-34/10
х=(100×5)/70-(34×7)/70
х=(500-238)/70
х=262/70
х=3 52/70
х=3 26/35
2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97,101,103,107,109,113,127,131,137,139,149,151,157,163,167,173,179,181,191,193,197,199,211.