12 3/5-7 1/6+2 3/10= 4/5:2 2/3+3 1/2= 170 8/51-2 4/9:3 2/3=

Question

12 3/5-7 1/6+2 3/10=
4/5:2 2/3+3 1/2=
170 8/51-2 4/9:3 2/3=

Answer 1

1) =12 18/30- 7 5/30+ 2 9/30=7 21/30=7 7/10 2)=3/10+3 1/2=3/10+ 3 5/10=3 8/10= 3 4/5 3)=170 8/51-1/3= 169 59/51 - 17/51=169 42/51= 169 14/17