-17-(-4целых 1/4+8целых 2/5)+(-9.6-4.25)=???

Question

-17-(-4целых 1/4+8целых 2/5)+(-9.6-4.25)=???

Answer 1

1)-4ц1/4+8ц2/5=- 17/4+42/5=83/20

2)- 9,6-4,25=- 13,85

3)83/20+( - 1385/100)= - 97/10= - 9,7

4) - 17 - ( - 9,7)=- 7,3