Question

dadas as funçoes f(x) = 3x - 1/2 e g(x) = 2x/3 + 1, determine o valor de f(1/2) - g(-2).

Answer 1

$f(x)=3x-1/2$

$f(\frac12)=3\frac{1}{2}-\frac12$

$f(\frac12)=\frac32-\frac12$

$f(\frac12)=\frac22=1$
e
$g(-2)=2-\frac23+1$

$g(-2)=-\frac43+1$

$g(-2)=-\frac43+\frac33$

$g(-2)=-\frac13$

então,

$f(\frac12)-g(-2)=1-\frac13\rightarrow 1-\frac13=\frac33-\frac13$

$\frac33-\frac13=\frac23$

$f(\frac12)-g(-2)=\frac23$