Question

Calcule e/4 +2f -3 quando e =12 e f = 1/2​

Answer 1

$\mathsf{\dfrac{12}{4}+2.\dfrac{1}{2}-3}\\\mathsf{3+1-3=1}$

$\boxed{\boxed{\mathsf{\dfrac{e}{4}+2f-3\big|_{e=2,f=\frac{1}{2}}=1}}}$