First clean up both of the equations :
2.2x -3.1y = - 3.2
.9x +y = 8.8 <===== multiply by 3.1 then add to the top equation to get
2.79x + 3.1y = 27.28 <====Add to top equation
4.99 x = 24.08
x = 4.826 <====== use this value of 'x' in either of the equations to calculate 'y' You can finish.....