Question

suma y resta de fracciones:

A)1/2-5/3=
B)5/2+7/2=
C)-1/3+7/3=
D)-4/5-5/9=
E)7/4-2/5=
F)-5/8+1/4=
G)15/6-17=
H)-1/4-10/3=
I)9/4+4/7=
J)5/4-8/9=
K)-7/2+15/4=
​

Answer 1

Respuesta:

$A) \frac{1}{2} - \frac{5}{3} = \frac{3}{6} - \frac{10}{6} = - \frac{7}{6}$

$B) \frac{5}{2} + \frac{7}{2} = \frac{12}{2} = 6$

$C) - \frac{1}{3} + \frac{7}{3} = \frac{6}{3} = 2$

$D) - \frac{4}{5} - \frac{5}{9} = - \frac{36}{45} - \frac{25}{45} = - \frac{36}{45} + ( - \frac{25}{45} ) = - \frac{61}{45}$

$E ) \frac{7}{4} - \frac{2}{5} = \frac{35}{20} - \frac{8}{20} = \frac{27}{20}$

$F) - \frac{5}{8} + \frac{1}{4} = - \frac{5}{8} + \frac{2}{8} = - \frac{3}{8}$

$G) \frac{15}{6} - 17 = \frac{15}{6} - \frac{102}{6} = - \frac{87}{6}$

$H) - \frac{1}{4} - \frac{10}{3} = - \frac{3}{12} - \frac{40}{12} = - \frac{3}{12} + ( - \frac{40}{12} ) = - \frac{43}{12}$

$I) \frac{9}{4} + \frac{4}{7} = \frac{63}{28} + \frac{16}{28} = \frac{79}{28}$

$J) \frac{5}{4} - \frac{8}{9} = \frac{45}{36} - \frac{32}{36} = \frac{13}{36}$

$K ) - \frac{7}{2} + \frac{15}{4} = - \frac{14}{4} + \frac{15}{4} = \frac{1}{4}$