Hi :) Complex fractions is a new subject for me, so I'd appreciate it if you could help me out with an explanation on how to get the answers. Thank you! Also, there are actually 8 questions, but I didn't want to burden you with too many of them, so I'll make a part two ^^

1. 10/8/9 ?/? ÷ ?/? → ?/? ÷ ?/? → ?/? ÷ (simplify) ?/? → ?/?
2. 5 7/5 ?/? ÷ ?/? → ?/? ÷ ?/? → ?/? ÷ (simplify) ?/? → ?/?
3. 2/5/4 ?/? ÷ ?/? → ?/? ÷ ?/? → ?/? ÷ (simplify) ?/? → ?/?

*if you don't understand this or if you don't know the answers, please don't answer, I genuinely need help*

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

Finally, the arena decides to offer advertising space on the jerseys of the arena’s own amateur volley ball team. the arena wants the probability of being shortlisted to be 0.14. what is this as a percentage and a fraction? what is the probability of not being shortlisted? give your answer as a decimal. those shortlisted are entered into a final game of chance. there are six balls in a bag (2 blue balls, 2 green balls and 2 golden balls). to win, a company needs to take out two golden balls. the first ball is not replaced. what is the probability of any company winning advertising space on their volley ball team jerseys?

Write the summation to estimate the area under the curve y = 1 + x2 from x = -1 to x = 2 using 3 rectangles and right endpoints