2×4= 8×5= 7×6= 5×1=
6×3+12= 5×6-13= 40-3×4= 28+4×6=
16+8= 30-6= 35-19-8= 5×6+7=
6+6=×
4+4+4+4+4=×
3+3+3+3 =×
5+5+5=×