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rezolvarea exercitiului(6x5+4xj-8):6=28:4

Răspuns :

(30+4xj-8):6=7
30+4xj-8=6x7
30+4xj-8=42
30+4xj=42+8
30+4xj=50
4xj=50-30
4xj=20
j=20:4
j=5