Question

3 X + 2 Y + X + Y = 11 find the x and y

Answer 1

3x+2y+x+y=11
4x+3y=11

$x = \frac{11 - 3y}{4}$
$y = \frac{11 - 4x}{3}$

there must be 2 equation and you have given one put value of any x or y in second equation and get your answer or just write second equation in comments so that I can edit my answer and I can provide you answer that is correct hope you like