P = AB+BC+CA
пусть BC=x
=>
AB = BC+2 = x+2
AC = 2BC = 2x
P = x+2+x+2x = 4x+2 = 50
4x = 48
x = 12
BC = 12
AB = 14
AC = 24
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P = AB+BC+CA
пусть BC=x
=>
AB = BC+2 = x+2
AC = 2BC = 2x
=>
P = x+2+x+2x = 4x+2 = 50
4x = 48
x = 12
=>
BC = 12
AB = 14
AC = 24