52+26= 71-35=
80-28= 38+(46-23)=
36+19-25 68-(36+18) 75-29+38
77﹣15=
31+26=
29+21=
82﹣15=
16+49﹣25=
18+12﹣10=
51-24+18= 100-38-56= 24-17+79=
63+27=
80﹣17=
45﹣28=
85﹣17+25=
53﹣(24+18)=
67﹣28+11=