Question

Ordinea efectuării op Reca Efectuează: [(7:7 + 4):5+9] x 78 =
​

Answer 1

Răspuns:

[(7:7+4):5+9]×78=

(5:5+9)×78

10×78=780

Answer 2

[(7:7+4):5+9]×78

=[(1+4):5+9]×78

=(5:5+9)×78

=(1+9)×78

=10×78

=780