Question

me podrían ayudar a resolver estas operaciones... 7/9 + (-4/5) + (-3/5) + (-1/5)=, 3 - 1/3 - 2/3= y 7- (- 3/6) - (- 2/ 6) =
paso a paso porfa..

Answer 1

$\frac{7}{9} + ( - \frac{4}{5} ) + ( - \frac{3}{5} ) + ( - \frac{1}{5} ) = \frac{7}{ 9} - \frac{4}{5} - \frac{3}{5} - \frac{1}{5} = \\ \frac{7}{9} + \frac{ - 4 - 3 - 1}{5} = \\ \frac{7}{9} + \frac{ - 8}{5} = \\ \frac{35 - 72}{45} = \\ \frac{ - 37}{45} = \\ - \frac { 37}{45} \\ \\- - - - - - - - - - - - - - \\ \\ 3 - \frac{1}{3} - \frac{2}{3} = \\ 3 + \frac{ - 1 - 2}{3} = \\ 3 + \frac{ - 3}{3} = \\ \frac{ - 3 \div 3}{3 \div 3} = \\ \frac{ - 1}{1} = - 1 = \\ 3 - 1 = \\ \\ 2 \\ \\ - - - - - - - - - - - - - - - \\ \\ 7 - ( - \frac{3}{6} ) - ( - \frac{2}{6} ) = \\ 7 + \frac{3}{6} + \frac{2}{6} = 7 + \frac{3 + 2}{6} = \\ 7 + \frac{5}{6} = \\ \frac{42 + 5}{6} = \\ \frac{47}{6}$