Помогите пожалуйста (2,4-7/17)-(1,6+3/34)

(2,4-7/17)-(1,6+3/34) =

2.4-1.6-7/17-3/34=

(2.4-1.6)-(7/17+3/34)=

0.8-(14/34+3/34)=

0.8-17/34=0.8-1/2=0.8-0.5=0.3