Question

a. 2 upon 3 + 6 upon 7 minus 1 upon 3 + 3 upon 2 + 5 upon 2 minus 4 upon 7 minus 3 evaluate​

Answer 1

Step-by-step explanation:

$= \frac{2}{3} + \frac{6}{7} - \frac{1}{3} + \frac{3}{2} + \frac{5}{2} - \frac{4}{7} - 3 \\ = ( \frac{2}{3} + \frac{6}{7} + \frac{3}{2} + \frac{5}{2} ) + ( - \frac{1}{3} - \frac{4}{7} - 3) \\ = (\frac{28 +36 + 63 + 105 }{42} ) + ( \frac{ - 7 - 12 - 63}{21} ) \\ = ( \frac{232}{42} ) + ( \frac{ - 82}{21} ) \\ = \frac{232 - 164}{42} \\ = \frac{68}{42} = \frac{34}{21}$