Răspuns :
5n+245=845
5n=845-245
5n=600|:5
n=120
54:n+67×5=334
54:n+335=334
54:n=334-335
54:n=-1
n=54:(-1)
n=-54
5n=845-245
5n=600|:5
n=120
54:n+67×5=334
54:n+335=334
54:n=334-335
54:n=-1
n=54:(-1)
n=-54