Question

find the perimeter of triangle
a=2x-5y+9
b=3y+6x-7
c=-4x+y+10
​

Answer 1

Answer:

perimeter of triangle is the sum of all sides

so

a+b+c= 2x-5y+9+3y+6x-7-4x+y+10

= 4x-y+12

is the perimeter of triangle

Answer 2

Answer:

2x 5y +9

I not understand sorry