C. 10r-3
Because 2r+5=7, the minus 6 and 7 which gives you 1 then minus 4 and 1 witch is 3 then you do 10r-3 and it will get you to 2r+5=7 again. I hope this helped!
Answer:
Step-by-step explanation:
I think it’s b correct me if I’m wrong
Answer choice B is the correct answer the rest don't make sense.
Answer:
3
Step-by-step explanation:
3
