Question

alguien que me ayude doy coronita :)​

Answer 1

5)

$\frac{2}{5} + \frac{12}{5} - \frac{13}{5} = \frac{2 + 12 - 13}{5} = \frac{1}{5}$

6)

$\frac{11}{4} - \frac{2}{7} = \frac{77 - 8}{28} = \frac{69}{28}$

7)

$\frac{5}{7} - \frac{7}{14} = \frac{10 - 7}{14} = \frac{3}{14}$

8)

$\frac{17}{6} + \frac{3}{8} = \frac{68 + 9}{28} = \frac{77}{28}$

9)

$\frac{23}{16} - \frac{2}{5} + \frac{7}{20} = \frac{115 - 32 + 28}{80} = \frac{111}{80}$

10)

$- \frac{2}{9} + \frac{3}{18} + \frac{14}{24} = - \frac{2}{9} + \frac{1}{6} + \frac{7}{12} = \frac{ - 8 + 6 + 21}{36} = \frac{19}{36}$

por me se simplifica los números y me queda la suma asi

$\frac{3 \div 3}{18 \div 3} = \frac{1}{6} \\ \frac{14 \div 2}{24 \div 2} = \frac{7}{2} \\ - \frac{2}{9} + \frac{1}{6} + \frac{7}{12}$