Question

我会算。
33 +9=                                  46+6=                               63 -7=     
78 - 20=                                25+40=                             71 - 10=     
49+30+10=                            37 - 20+40=                      83 - 60+50=     
55 - 7+40=                            21+30 - 9=                         70+20 -7 =

Answer 1

42；52；56；58；65；61；89；57；73；88；42；83