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397+42×m=859 va rog ajutatima

Răspuns :

397+42m=859
42m=859-397
42m=462/:42
m=11
succes! :)
verificare:397+42*11=859
397+462=859
42m = 859 - 397
42m = 462
m = 462 : 42
m = 11