17+21=
32+45=
41+32=
25+34=
43+21
12+71=
20+30= 5+4= 50+9=59
10+70= 2+1= 80+3=83
10+20= 7+1= 30+8=38
40+30= 1+2= 70+3=73
30+40= 2+5= 70+7=77
40+20= 3+1= 60+4= 64
