Question

решите уравнение 1,4:2целых 1/3=0.2x:3

Answer 1

1.4/2(1/3)=0.2x/3
1.4*3/7/3=0.2x
1.4*3^2/7/0.2=x
x=1.4*3^2/7*0.2
x=7*3^2/7
x=3^2
x=9