28+49= 63-45= 100-14=
32+18+47= 83-(17+28)=
45+26+18= 74-18+22= 81-38-27=
45+8= 26+47= 92-7=
29+15= 64-27= 35+63=
54+35= 28+49= 62-27=
82-37= 85-32= 46+24=
90-54= 38+44= 70-7=
29+26= 56-33= 53-45=
①58+29=
②71-32=
③64+18=
④48+52=
⑤90-76=
⑥72-18=
+38=40 -45=29 +26=83 72-=35