Реши уровнения: x * 16 : 8 = 80, 180 : x * 4 = 24, 34 * x - 12 = 260, 2400 : ( 317 + x ) = =3

x*16=80*8
x*16=640
x=640/16
x=40
180/x=24/4
180/x=6
x=180/6
x=30
34*x=260+12
34*x=272
x=272/34
x=8
317+x=2400/3
317+x=800
x=800-317
x=483