68 : [17*2] * 350:100= 181*4:[76:38]+38= 309:[2*405:9:30]=

Question

68 : [17*2] * 350:100=
181*4:[76:38]+38=
309:[2*405:9:30]=

Answer 1

68 : [17*2] * 350:100=7
1)17*2=34
2)68:34=2
3)350*2=700
4)700:100=7

Answer 2

68:[17*2]*350:100=7
181*4:[76:38]+38=38
309:[2*405:9:30]=103