Converting the mixed fraction into improper fractions
Mixed Fraction=Integral part×Denominator+NumeratorDenominator
We will use the above formula to convert the mixed fraction into improper fraction.
13×423÷312×12
=13×4×3+23÷3×2+12×12
=13×143÷72×12
Applying the rule of BODMAS and simplifying further
=13×143÷72×12=13×143×27×12
[Performing division first]
=1×14×2×13×3×7×2=29
Hence, the given expression simplifies to 29