the perimeter of triangle ABC is 38cm AB=AC and AB is greater than BC
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Let,
BC= y cm
AC= AB= x cm
Then,
AB+BC+AC= 38
2x+y = 38
But,
x= y + 7
So,
2(y+7) + y =38
3y+14= 38
3y= 24
Y = 24/3= 8 cm
Therefore,
BC= 7 cm
AC = AB = y + 7 = 15 cm
BC= y cm
AC= AB= x cm
Then,
AB+BC+AC= 38
2x+y = 38
But,
x= y + 7
So,
2(y+7) + y =38
3y+14= 38
3y= 24
Y = 24/3= 8 cm
Therefore,
BC= 7 cm
AC = AB = y + 7 = 15 cm
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