Question

sendo f(x)=4x-7 e g(x)=2x-5, calcule= f(-1/2) + g(1)​

Answer 1

$f(-1/2)+g(1)~=~\left(4~.~\left(-\frac{1}{2}\right)\,-~7\right)~+~(2~.~(1)\,-~5)\\\\\\f(-1/2)+g(1)~=~\left(-\frac{4~.~1}{2}\,-~7\right)~+~(2\,-~5)\\\\\\f(-1/2)+g(1)~=~\left(-2\,-~7\right)~+~(-3)\\\\\\f(-1/2)+g(1)~=~-9~-~3\\\\\\\boxed{f(-1/2)+g(1)~=\,-12}$