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12×(3×4-2×x):4=6 afla x

Răspuns :

12×(3×4-2×x):4=6
12×(12-2×x)=6×4
12×(12-2×x)=24
12-2×x=24:12
12-2×x=2
2×x=12-2
2×x=10
x=10:2
x=5


PROBA

12×(3×4-2×5):4=
=12×(12-10):4=
=12×2:4=
=24:4=
=6 (adevarat )