Odpowiedź:
14+ (8+3*2)=
=14+ (8-6) =
=14+2 =
= 16
21-3*6+4=
=21-18+4=
=3+4=
=7
28+16:4*2=
=28+16:8=
=28+2=
30
7+3*2=
=7 + 6=
13