Write a related subtraction fact for 5+7=12

Here are 2 related subtraction facts for that problem c: ;

12-7=5
or
12-5=7

A. p = 2(l + w)p/2 - l = ww = p/2 - l b. while isolating the variable w in the equation, i first divided both sides by 2 and then i subtracted l from both sides. i hope this .