Question

the sides of an equilateral Triangle are 2x-3y+1, x+y-1 and 3x-y-9. find the length of each side. ​

Answer 1

Answer:

21 is the correct answer ♥️♥️

Step-by-step explanation:

In eq. triangle all sides are equal

so, 2x-3y+1=3x-y-9

-2y+10=x ---(1)

and

2x-3y+1=x+y-1

x=4y-2 ---(2)

Comparing (1) & (2)

-2y+10=4y-2

6y=12

y=2

and x=6

so, sides=x+y-1

=7

Perimeter=3×7=21cm