Răspuns :
x/14=3/7 produs in cruce ( sau al mezilor cu extremilor )
7x=42 | :7
x=6.
7x=42 | :7
x=6.
x/14=3/7
inmultim mezii si extremii
⇒x*7=14*3
7x=42
x=42÷7
x=6
VERIFICARE
6/14=3/7
6*7=14*3
42=42
inmultim mezii si extremii
⇒x*7=14*3
7x=42
x=42÷7
x=6
VERIFICARE
6/14=3/7
6*7=14*3
42=42