42-7-940 25+20+2580
29+8-620 61-11+1060
20+5= 34+30= 46-8= 70+23=
56-8= 56+4= 20+40= 37+8=
38+6= 100-40= 95+5= 90- 9=
34- 8= 46+40= 20+80= 47+7=
76-6+20= 98-90+6= 26-6+9= 25+5-7=
38- 27+14= 56-6+14= 63- 40+7= 49+7-20=