Дано: P = 25
P = a + b + c
Пусть Х - AC, тогда х + 5 - AB = BC
x + 5 + x + 5 + x = 25
3x + 10 = 25
3x = 25 - 10
3x = 15
x = 15 : 3
x = 5
AC = 5 см
AB = 5 + 5 = 10 см
AB = BC = 10 см
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Дано: P = 25
P = a + b + c
Пусть Х - AC, тогда х + 5 - AB = BC
x + 5 + x + 5 + x = 25
3x + 10 = 25
3x = 25 - 10
3x = 15
x = 15 : 3
x = 5
AC = 5 см
AB = 5 + 5 = 10 см
AB = BC = 10 см