12 -[ 8 - {9 - (7 - 1 )}] – InterviewSolution

1.	12 -[ 8 - {9 - (7 - 1 )}]
Answer» For addition of two unlike fractions,first change them to the like fractions.LCM of 9,12=36Now,LET us change each of the GIVEN fraction into an equivalent fraction having 36 as the denominator.98 × 44 = 3632 127 × 33 = 3621 Now.add the like fractions,= 3632 + 3621 = 3632+21 = 3653 =[1 3617 ]

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