4x - 3y = 31 2x + 5y = 33

4x-3y=31
2x+5y=33... (x2)

4x-3y=31
4x+10y=66
--------------------(-)
-13y=-35
y= -35/-13 =35/13

x=> 2X+5Y=33
2X+5(35/13)=33
2X+175/13=33
2X=33-175/13
=429/13-175/13
2x=254/13
X= 254/13 :2
x= 127/13