## Elementary Technical Mathematics

$10\dfrac{3}{8}$
Make the fractions similar using their LCD, which is $8$, to obtain: \begin{array}{cc} &&3\dfrac{1}{8} \\&+ &2\dfrac{4}{8} \\&&\underline{4\dfrac{6}{8}} \end{array} Add the fractions together and the whole numbers together to obtain: $=(3+2+4)+\dfrac{1+4+6}{8} \\=9+\dfrac{11}{8} \\=9+1\dfrac{3}{8} \\=10\dfrac{3}{8}$