Question

17/(3/5+1/4)+(7/8-1/4)*(4/5)

Answer 1

17:(12/20+5/20)+(7/8-2/8)*(4/5)=
=17*(20/17)+(5/8)*(4/5)=
=20+4/8=20+(1/2)=20,5

Answer 2

17/(3/5+1/4)+(7/8-1/4)*(4/5)

решение

1) 35 + 14 = 1220 + 520 = 17 20

2)78 - 14 = 78 - 28 = 58

3) 58 * 45 = 12

4) 17: 1720 = 20

5) 20 + 12 = 20.5