Question

find $1\frac{1}{3}+1\frac{3}{4}$.
write $\frac{13}{19}$ as a mixed number.
$1\frac{1}{3}+1\frac{3}{4}=1\frac{4}{19}+1\frac{9}{19}$
$=(1 + 1)+\left(\frac{4}{19}+\frac{9}{19}\
ight)$
$=(1 + 1)+\frac{13}{19}$
$= 2+\frac{13}{19}$
$= 2+\frac{?}{?}$

Explanation:

Step1: Simplify $\frac{13}{12}$

$\frac{13}{12} = 1 + \frac{1}{12}$

Step2: Substitute back to expression

$2 + \frac{13}{12} = 2 + 1 + \frac{1}{12}$

Step3: Rewrite as mixed number form

$2 + \frac{13}{12} = 2 + 1\frac{1}{12}$

Answer:

The boxed number is $1$, and the fraction is $\frac{1}{12}$, so the completed expression is $2 + 1\frac{1}{12}$ (or the final sum is $3\frac{1}{12}$)