x+y+z-4=x
x+y+z-8=y
x+y+z-10=z
x+y+z-x=4
x+y+z-y=8
x+b+z-z=10
y+z=4
x+z=8
x+y=10
y+z+x+z+x+y=4+8+10
2x+2y+2z=22
x+y+z=11
а)22,7:10=2,27 23,3:10=2,33 3,14:10=0,314 9,6:10=0,96 б)304:100=3,04 42,5:100=0,425 2,5:100=0,025 0,03:100=0,0003 в)143,4:12=11,95 1,488:124=0,012 0,3417:34=0,01005 159,5:235=0,68 65,32:568=0,115