Answer :

If you are simplifying it would be 9r-4
ismaeljr071
7r + 2r - 4

7r + 2r = 9r

Answer - 9r - 4

Since 4 isn't a like term to 9r, you can't subtract it.

[Im unsure if you can do the like term with subtracting but I' sure with this answer!]

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