17+35= 70+2= 56+30= 23+7-20= 3×2=
34-16= 86-12= 87-16= 38-8+20= 2×2=
67+10= 84+6= 67+14= 34-(14-10)= 1×1=
2×5= 90-10= 82-20= 21+(35+19)= 1×3=