Question

(HELP IM GONNA GET BAD GRADES)

Answer 1

9 is your answer to your question

Answer 2

I think it's nine because bother numbers are divisable by nine 63 ÷9 is 7
and 81 ÷9 is 9 so try to arrange them into rows of rubarb tomato rubarb tomato until each has nine then make new row with same thing over untill you run out
it's worth ashot