Question

X/2 + y/3 =2
x/3 +y/2 =13/6
Sustitución.

Answer 1

X/2 +y/3=2
(3x+2y)/6=2
3x+2y=12
x=(12-2y)/3 ... (I)

X/3+Y/2=13/6
(2X+3Y)/6=13/6
2(12-2Y)/3 +3Y=13
(24-4Y)/3+3Y=13
24-4Y+9Y=39
24+5Y=39
5Y=15
Y=3

POR LO TANTO: EN (I)
 X=(12-2Y)/3
X=(12-2(3))/3
X=6/3
X=2