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