# Chapter 3 - Adding and Subtracting Fractions - 3.4 Adding and Subtracting Mixed Numbers - 3.4 Exercises - Page 227: 10

$13\frac{7}{10}$

#### Work Step by Step

$6\frac{3}{5}$ + $7\frac{1}{10}$ = $6\frac{6}{10}$ + $7\frac{1}{10}$ (10 is the least common denominator) = $6$ + $7$ + $\frac{6}{10}$ + $\frac{1}{10}$ (adding whole part separately and fractional part separately) = $13$ + $\frac{6 + 1}{10}$ = $13$ + $\frac{7}{10}$ = $13\frac{7}{10}$ The estimate was 14, so the exact answer of $13\frac{7}{10}$ is reasonable.

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