Question

0,2+0,8(0,65-1/24-4 7/15:2)

Answer 1

0,2+0,8·(0,65-1/24 - 4 (целых) 7/15 : 2)= -1,1
1)4 7/15:2=67/15*1/2=67/30
2)0,65-1/24=65/100-1/24=73/120
3)73/120-67/30=(73-268)/120=-195/120=-39/24
4)0,8*(-39/24)=8/10*(-39/24)=-39/30=-1 3/10=-1,3
5)0,2+(-1,3)=-1,1