a. given b. distributive property (a(b+c)=ab+ac) c. addition or commutative property (a+b=b+a) d. subtraction property of equality (if a=b, then a-c=b-c) e. division property of equality (if a=b, then a/c=b/c) f. equality property (if a=b, then b=a)
a. is distribution property where you just multiply 3(n+4)= 3n+12 b. combine like terms 3n+3n=6n c.subtract 42-12=30 d.divide 30 by 6n e. you answer 5=n f. They just turn it around because n has to be in the front
