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Rezolvati ecuatiile in N :a x6=36 7xa=42 12xa=144 10xa=80

Răspuns :

1.a=36/6=6 2.a=42/7=6 3.a=144/12=12 4.a=80/10=8
6×6=36 7×6=42 12×12=144 10×8=80