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afla valoarea lui,,n'din egalitatile:
   5xn+245=845
 54:n+67x5=344
 n:3x8=616
894-n:4=833

Răspuns :

5n+245=845
5n=845-245
5n=600
n=600:5
n=120
============
54:n+67x5=344
54:n+335=344
54:n=9
n=54:9
n=6
=============
n:3x8=616
n:24=616
n=616x24
n=14784
============
894-n:4=833
n:4=894-833
n:4=61
n=61x4
n=244

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