[27×25-63×2×3+(426:3+4×p):2]:4×6=714
[675-126×3+(142+4×p):2]:4=714:6
[675-378+(142+4×p):2]:4=119
297+(142+4×p):2=119×4
297+(142+4×p):2=476
(142+4×p):2=476-297
(142+4×p):2=179
142+4×p=179×2
142+4×p=358
4×p=358-142
4×p=216
p=216:4
p=54
Probă
[27×25-63×2×3+(426:3+4×54):2]:4×6=714
[675-126×3 +(142+216):2]:4×6=
=(675-378+358:2):4×6=
=(297+358:2):4×6=
=(297+179):4×6=
=476:4×6=
=119×6=
=714 (adevarat )
