Question

práctica para sumar fracciones y completa el siguiente ejercicio 3/4+2/5= 8/7+4/6 = 3/5+6/9= 3/4+5/8= 6/7+4/5= 5/9+5/6=

Answer 1

Respuesta:

$\frac{3}{4} + \frac{2}{5} = \frac{5(3) + 4(2)}{20} \\ \: \: \: \: \: = \frac{15 + 8}{20} \\ = \frac{23}{20}$

$\frac{8}{7} + \frac{4}{6} = \frac{6(8) + 7(4)}{42} \\ \: \: \: \: \: \: = \frac{48 + 28}{42} \\ = \frac{76}{42} \\ = \frac{38}{21}$

$\frac{3}{5} + \frac{6}{9} = \frac{9(3) + 5(6)}{45} \\ \: \: \: \: \: \: = \frac{27 + 30}{45} \\ = \frac{57}{45} \\ = \frac{19}{15}$

$\frac{3}{4} + \frac{5}{8} = \frac{2(3) + 5}{8} \\ \: \: \: \: \: \: = \frac{6 + 5}{8} \\ = \frac{11}{8}$

$\frac{6}{7} + \frac{4}{5} = \frac{5(6) + 7(4)}{35} \\ = \frac{30 + 28}{35} \\ = \frac{58}{35}$

$\frac{5}{9} + \frac{5}{6} = \frac{6(5) + 9(5)}{54} \\ = \frac{30 + 45}{54} \\ = \frac{75}{54} \\ = \frac{25}{18}$