Question

Resolver
A)1/5-(1-3/10)+1/2=
B)-3/4-(3/8+5/6-11/13)=
C)2/9-(2/3-1/6)-3/4=

Answer 1

Explicación paso a paso:

$\frac{1}{5} - (1 - \frac{3}{10} ) + \frac{1}{2}$

$\frac{1}{5} - \frac{7}{10} + \frac{1}{2} =$

$\frac{2 - 7 + 5}{10} = \frac{ - 5 + 5}{10} = \frac{0}{10}$

$- \frac{3}{4} - ( \frac{3}{8} + \frac{5}{6} - \frac{11}{13} )$

$- \frac{3 }{4} - ( \frac{3}{8} + \frac{5}{6} - \frac{11}{13}) = \frac{117 + 260 - 269}{312} = \frac{108}{312}$

$- \frac{3}{4} - \frac{108}{312} = \frac{ - 234 - 108}{312} = \frac{ - 342}{312} = \frac{57}{52}$