help me with this im confused

yes or just 4g

$5g+6w-g-6w$ 

We can switch $g$ and $6w$

$5g-g+6w-6w$

Compute

$5g-g=4g$ and $6w-6w=0$

So $4g+0$ 

Or just $4g$

Yes you are right

-KeyLimePi 

Yes Just first calculate the variables. (5g-g)+(6w-6w)=(5-1)g=4g

Its a bit basic