Question

Find the sum. Write double you used.
4+5=

Answer 1

Hey there!

4 + 5 = 9

I am not really sure what you mean by "write double you used", but if you wanted the double of 9, it would be 18.

Hope this helps!

Have a great day!

Answer 2

18

Explanation:

Write double you used. is twice of what I used so

8+10=18

or

4+4+5+5=18

or 4+5=9*2=18