Question

(7*0.4)/(1.8*1.4)
Помогите решить

Answer 1

1. 7*0,4=7*4/10=28/10
2. 1,8*1,4=18/10*14/10=18*14/100
3. (28/10)/(18*14/100)=(28/10)*(100/18*14)=(10*28)/(18*14)=10*2/18=20/18