1)11/18-4/9*3/16 2)1 3/5*3/4+1 3/8

[latex] \frac{11}{18}- \frac{4}{9}* \frac{3}{16}= \frac{11}{18}- \frac{1*1}{3*4}= \frac{11}{18}- \frac{1}{12}= \frac{22-3}{36} = \frac{19}{36} [/latex] [latex]1 \frac{3}{5} * \frac{3}{4} +1 \frac{3}{8}= \frac{8}{5}* \frac{3}{4}+1 \frac{3}{8}= \frac{6}{5}+ \frac{11}{8}= \frac{48+55}{40} = \frac{103}{40}=2 \frac{23}{40} [/latex]