Question

PLEASE SHOW YOUR WORK THIS IS DO IN AN HOUR AND I HAVE TO SUMBIT A PHOTO OF THE WORK AND THE WORK PAGE PLEASE IN NEED OF HELP

Answer 1

1. 
   `(21)/(2) * (2)/(21) = 1`

10 1/2 as an improper fraction is
`(21)/(2)`

the reciprocal of 10 1/2 is
`(2)/(21)`

so
`(21)/(2) * (2)/(21) = 1`

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