Posted by
KerryAnn on
.
what is 18m2+12m2+23m2

math 
Damon,
18 + 12 + 23 of anything is 53 anythings
so
53 m2
That is lucky because I am not sure if m2 is a variable name or your own notation for m^2 , m squared

math 
KerryAnn,
yes i mean m squared

math 
Damon,
Well, like terms is like terms whatever m2 is :)