1/4:2 1/3=0,2х:3
1/4*0,2х=2.1/3*3
0,05х=7
Х=140
2.1/7:2,5=8,4:7х
2,1*8,4=2,5*7х
10,5=17,5х
Х=1,67
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1/4:2 1/3=0,2х:3
1/4*0,2х=2.1/3*3
0,05х=7
Х=140
2.1/7:2,5=8,4:7х
2,1*8,4=2,5*7х
10,5=17,5х
Х=1,67