3＋5=4＋4=7-7=6＋2=1＋7=8＋0=9－0=
0＋7=18–9=7+7=12–5=8+6=16–5=1+10=
13–5=11–7=11+9=3+6=9+7=5–0=19–10=
16+3=8+5=20–15=20+50= 77-7= 55+40= 68-60=
3+6+5=63-30-3=20+30+40=75-57+57=
89+11-50=5-3+4=6-5+4=8-5+3=
10-5+2=4+3+2=7-3+2=5+3-2=
10-0-3=17-6-7=6+3+1=14+2–8=