Respuesta:
Explicación paso a paso:
a) [tex]-\frac{7}{2} +\frac{5}{4} = \frac{-14+5}{4} = -\frac{9}{4}[/tex]
-7/2 + 5/4 = (-14 + 5)/4 = -9/4
b) [tex]-\frac{6}{11} - \frac{-1}{3} = \frac{-18-11}{33} = - \frac{29}{33}[/tex]
-6/11 - 1/3 = (-18 - 11)/33 = - 29/33
c) [tex]\frac{9}{4} +(-6) = \frac{9}{4} - 6 = \frac{9-24}{4} = - \frac{15}{4}[/tex]
9/4 - 6 = (9 - 24)/4 = -15/4
