Question

2sobre 8 -x igual 6 sobre 20 , .

Answer 1

2/(8-x)=6/20
2/(8-x)=3/10
2=3(8-x)/10
2=(24-3x)/10
2(10)=24-3x
20=24-3x
-3x=20-24
-3x= -4
-1(-3x= -4)
3x=4
x=4/3

Saludos..