Question

Помогите рещит пж.Найдите x в пропорциях:1)0,41:0,6×-2,5=12,3:15

Answer 1

0.41/0.6х-2.5 =12.3/15
0.6х-2.5=0.41×15/12.3=6.15/12.3=0.5
0.6х-2.5=0.5
0.6х =0 .5+2 .5
0.6х=3
х =3÷0.6
х=5