20+61-30=
47+35-34=
81-20+16 =
83+15-62 =
75-30+46 =
97-59+17 =
32+43-38=
46+ 38-13=
13+82- 66=
65+12-49=
25+31-52=
33-19+57=
92-55+ 29=
22+71-59=
71-60十65=
44+42-77=
69-50十58=
80-54+74=
55+44-37=
89-52+24=
52-3+45=
53+27-2=
12+83-79=
84-82+ 0 =
3+78-30=
91-89+78=