Решите дроби! 0,8 + (- 5/8) = - 1/50 + 1,37 = 7,11 - 1/2= -2/7 * 1,7=

Question

Решите дроби!
0,8 + (- 5/8) =

- 1/50 + 1,37 =

7,11 - 1/2=

-2/7 * 1,7=

Answer 1

1)0,8+(-5/8)=8/10-5/8=(32-25)/40=7/40
2)-1/50+1,37=1,37-1/50=137/100-2/100=135/100=1,35
3)7,11-1/2=711/100-50/100=661/100=6,61
4)-2/7*1,7=-(2*17)/(7*10)=-17/35