answer the questions ......
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We know that (a/b)^-1 = (b/a)
=> {(3/4)-(4/1)}^-1
=> { (3-16)/4}^-1
=> {-13/4}^-1
=> -4/13
=> {(3/4)-(4/1)}^-1
=> { (3-16)/4}^-1
=> {-13/4}^-1
=> -4/13
Jennifer111113:
my answer is 13/12
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