find the perimeter of an equilateral triangle whose sides are:4 x rays to 2 -3y+8.

Answer 1

I have a bit of trouble deciphering just what you mean, but my best guesses are

4x + 4x + 2-3y+8 = 8x-3y+10
or
12x
or
3(2-3y+8) = 30-9y