Question

if a+1/a=17/4,find the value of (a-1/a)
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Answer 1

Answer:

4a+4=17a

13a=4

a=13/4

a-1/a

13/4-1 =11/4

11/4/13/4

11/13

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Answer 2

4(a+1) = (17)a
4a+4 =17a
17a-4a = 4
13a = 4

Therefore; a =4/13

a-1/a = 4/13-1/4/13
=-9/13/4/13
=-9/4