For the Given Functions F(x) and G(x), Find (F $f(x)=-7 x+5, g(x)=-2 x+7$

For the given functions f(x) and g(x) , find (f + g) (x) or (f - g) (x) as indicated
- $f(x) =-7 x+5, g(x) =-2 x+7$
Find $(f+g) (x)$ .

A) $-9 x+12$
B) $-5 \mathrm{x}+12$
C) $-2 \mathrm{x}+5$
D) $3 \mathrm{x}$