There is a RANGE of solutions for this....
Area of ENTIRE frame - area of picture = 34
(2x+3)(y+2) - xy = 34
xy +4x +3y = 28
See diagram of this equation graphed on desmos.....pick any (positive) x,y on the graph....it will solve this equation...
I picked a couple of possibilities x,y 5,1 2,4 2.844, 2.844 etc......