Combine like terms:
-r-10r
We can always add variables as long as they are the same. So we can not add 10x+20y. That's impossible.
We can't add 3r^2+10r. That's also impossible.
However, we have the same variable, r. So we can add -r-10r. And the answer is:
-11r
Hope this helps! :)
Hey there!
-r - 10r
= -1r - 10r
COMBINE the LIKE TERMS
= (-1 - 10r)
= -11r
Therefore, your answer is: -11r
Good luck on your assignment and enjoy your day!
~Amphitrite1040:)