(х+у+z)/3 = 450
x+y+z = 1350
x = 3y
z = y - 2
3y + y + y - 2 = 1350
y = 270,4
z = 268,4
x = 811,2
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(х+у+z)/3 = 450
x+y+z = 1350
x = 3y
z = y - 2
3y + y + y - 2 = 1350
y = 270,4
z = 268,4
x = 811,2