Răspuns :
5*n=845-245
5*n=600
n=600:5
n=140
54:n+335=344
54:n=344-335
54:n=9
n=54:9
n=6
n:3=616:8
n:3=77
n=77*3
n=231
n:4=894-833
n:4=61
n=61*4
n=244
5*n=600
n=600:5
n=140
54:n+335=344
54:n=344-335
54:n=9
n=54:9
n=6
n:3=616:8
n:3=77
n=77*3
n=231
n:4=894-833
n:4=61
n=61*4
n=244