5m+3n+p, -5p+3n, and 2n-m
Put a 1 in front of the two letters which do
not have a number in front of them.
5m+3n+1p, -5p+3n, and 2n-1m
2. Put a + sign in front of the two expressions which do
not have a sign in front of them.
+5m+3n+1p, -5p+3n, and +2n-1m
Color every term, the number and the sign before it,
if any:
1. red if it contains the letter "m".
2. blue if it contains the letter "n".
3. green if it contains the letter "p".
5m+3n+1p, -5p+3n, and 2n-1m
We combine both red terms:
+5m-1m, which gives +4m
We combine all three blue terms:
+3n+3n+2n, which gives +8n
We combine both green terms:
+1p-5p, which gives -4p
We put them together:
+4m+8n-4p.
We can remove the + in front:
4m+8n-4p
And we can get rid of the coloring:
4m+8n-4p
That's it! I'll bet you can now do such problem as this
all in one step without coloring or putting + signs or 1's
in front!
Edwin
