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3) Afla numerele necunoscute a) 72:a=9 b) b:3==28 c) ( 45+19):c=8 urgeenttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttt

Răspuns :

a) a•9=72=> a=8
b) b=28•3=84
c) 64:c=8 => c=64:8=8