a) 86+9x7=86+63=149
38+30:2=
38+15=53
87-12x4=
87-48=39
73-56:7=
73-8=65
b) 39+3x17+93=
39+51+93
90+93=183
97-9x6+78=
97-54+79=
43+78=121
75-18:6+54=
75-3+54=
72+54=126
98-36:2-24=
98-18-24=
80-24=56
c) 3x17+4x39=
51+156=207
8x37-6x23=
296-138=158
93:3+33:3=
31+11=42
81:9-27:3=
9-9=0
