What is ${8} \dfrac{2}{5} - {7}\dfrac{1}{2}$?A. $\dfrac{9}{10}$ A. $\dfrac{9}{10}$ B. $ {1} \dfrac{9}{10}$ C. $ {2} \dfrac{9}{10}$ D. $ {4} \dfrac{9}{10}$ E. $ {3} \dfrac{9}{10}$
Show Answer Show The First Step 1. ${8} \dfrac{2}{5} - {7}\dfrac{1}{2}$$ = {8} + \dfrac{2}{5} - {7} - \dfrac{1}{2}$$ = {8} - {7}+ \dfrac{2}{5} - \dfrac{1}{2}$Show Next Step 2. $ = {1} + \dfrac{2}{5} - \dfrac{1}{2}$$ = \dfrac{5}{5} + \dfrac{2}{5} - \dfrac{1}{2}$Show Next Step 3. $ = \dfrac{{5}+{2}}{5} - \dfrac{1}{2}$$ = \dfrac{{7}}{5} - \dfrac{1}{2}$Show Next Step 4. $ =\dfrac{{7} \times {2}}{{5} \times {2}} - \dfrac{{1}\times {5}}{{2} \times {5}}$Show Next Step 5. $ = \dfrac{{14}}{{10}} - \dfrac{5}{10}$$ = \dfrac{{14}-{5}}{10}$$=\dfrac{9}{10}$ No More Steps Practice Again Correct! Nice work!
