Question

Помогите плизз срочноо

Answer 1

В номере 87 ответ 42.

Answer 2

57.4÷4=14.35
1 1/6÷4 2/3=7/6÷14/3=7/6×3/14=
=1/4=0.25
2.7+5 1/20=2.7+5.05=7.75
7.75×0.8=6.2
14.35-6.2+0.25=8.4
1 2/3+1/5=1 10/15+3/15=1 13/15
2 1/15-1 13/15=1 16/15-1 13/15=
=3/15=1/5=0.2
8.4÷0.2=42