Respuesta :

The given expression is :

a/2 + 4

Substitute a = 12

[tex]\begin{gathered} \frac{a}{2}+4 \\ \frac{a}{2}+4=\frac{12}{2}+4 \\ \frac{a}{2}+4=6+4 \\ \frac{a}{2}+4=10 \end{gathered}[/tex]

at a = 12, a/2 + 4 = 10

Answer : 10

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