3x(2x5) . Both of these will answer to 30. Hoped this helped !!
I think 6 but I’m not sure also how I got this answer is by simplifying 3/2 to 1 and a half so than I did 7 and a half - 1 and a half
10/45 for black
12/45 for green
3/45 for orange (can be simplified to: 1/15)
20/45 for blue