a: \(\dfrac{-3}{16}+\dfrac{-3}{8}-\dfrac{5}{4}\)
\(=\dfrac{-3}{16}+\dfrac{-6}{16}-\dfrac{20}{16}\)
\(=\dfrac{-29}{16}\)
b: \(\left(-\dfrac{25}{13}\right)+\left(-\dfrac{9}{17}\right)+\dfrac{12}{13}+\left(-\dfrac{25}{17}\right)\)
\(=-1-2\)
=-3
a. \(\dfrac{-3}{16}+\dfrac{-3}{8}-\dfrac{5}{4}=\dfrac{-3}{16}+\dfrac{-6}{16}-\dfrac{20}{16}=\dfrac{-3+\left(-6\right)-20}{16}=\dfrac{-29}{16}\)
b. \(\dfrac{-25}{13}+\dfrac{-9}{17}+\dfrac{12}{13}+\dfrac{-25}{17}=\dfrac{-25}{13}+\dfrac{12}{13}+\dfrac{-9}{17}+\dfrac{-15}{17}=\dfrac{-25+12}{13}+\dfrac{-9+\left(-15\right)}{17}=\dfrac{-13}{13}+\dfrac{-24}{17}=-1+\dfrac{-24}{17}=\dfrac{-17}{17}+\dfrac{-24}{17}=\dfrac{-17+\left(-24\right)}{17}=\dfrac{-41}{17}\)
