Question

deseo resolver de repetto los siguientes ejercicios:
2(-1/5)+{3-2/5-1/2[-3(-2/3)-1+1/5]+4(-5/2)}

Answer 1

$2(- \frac{1}{5})+\{3- \frac{2}{5}- \frac{1}{2}[-3(- \frac{2}{3})-1+ \frac{1}{5}]+4(- \frac{5}{2})\} = \\ \\(- \frac{2}{5})+\{3- \frac{2}{5}- \frac{1}{2}[+ \frac{6}{3}-1+ \frac{1}{5}]+(- \frac{20}{2})\} = \\ \\ (- \frac{2}{5})+\{3- \frac{2}{5}- \frac{1}{2}[+ 1+ \frac{1}{5}]+(- 10)\} = \\ \\ (- \frac{2}{5})+\{3- \frac{2}{5}- \frac{3}{5}- 10\} = \\ \\ (- \frac{2}{5})+\{3- 1- 10\} = \\ \\ (- \frac{2}{5})- 8 = \boxed{ -\frac{42}{8} }$

Espero que te sirva, salu2!!!!