Răspuns :
[tex](a \times 5) \div 2 = 40 \div 4[/tex]
[tex]5a \div 2 = 10[/tex]
[tex]5a = 10 \times 2[/tex]
[tex]5a = 20[/tex]
[tex]a = \frac{20}{5} [/tex]
[tex]a = 4[/tex]
[tex]5a \div 2 = 10[/tex]
[tex]5a = 10 \times 2[/tex]
[tex]5a = 20[/tex]
[tex]a = \frac{20}{5} [/tex]
[tex]a = 4[/tex]