Please Help Me On This GCSE Higher Question

Can anyone answer this question which is in a form of a fraction?

What does this expression equal? What do you mean by the word "answer"? Did you mean to type

8x^2+20x-12/(8x^2-2)=0 ?

the answer is: 2(x+3)/2x+1

) In an election there were four candidates: Arjan, Bess, Colin and Diane.
Between 400-450 people voted.
Exactly 2/5 voted for Arjan, 1/3 for Bess and 1/4 for Colin.
a. How many people voted altogether?
b. How many voted for Diane?

5) I am thinking of two fractions.
When I add them, I get 8/15.
When I multiply them I get 1/24

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