Slightly random algebra question...

[wrigley09]

I hate math, so this is probably pretty simple...

In one of my kaplan books it has the formula: F-mg=ma
They rearrange it to: a=(F-mg)/m
Then it simplifies the formula to: a=F/m-g

HOW did they get from the second formula to the third? I can't figure it out, it's driving me nuts, and I know if someone doesn't explain it to me, I'll have to do something similar on my own mcat and get it wrong, which will cause me to get a lower score, then I won't get into med school, and all of my hopes and dreams will be shattered. Or maybe not, but someone please help. Thanks.

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[lorenzomicron]

F-mg=ma
divide by m

(F-mg)/m= a
distribute

(F/m) - (mg/m) = a

(F/m) - g =a

 

[wrigley09]

Ohhh, I'm an idiot. For some reason I was looking at it as a=F/(m-g) Thank you so much!