-3,5/4=x/20
4х=-3.5*20
4х=-70
х=-70:4
х=-17.5
4,1/-7=20,5/-y
-4.1у=-7*20.5
-4.1у=-143.5
у=-143.5:(-4.1)
у=35
-3,5/4=x/20
4х=-3.5*20
4х=-70
х=-70:4
х=-17.5
4,1/-7=20,5/-y
-4.1у=-7*20.5
-4.1у=-143.5
у=-143.5:(-4.1)
у=35