Question

ayuda plis, son operaciones combinadas

Answer 1

Respuesta:

1)

$-\frac{3}{8} [3-\frac{3}{5}-(\frac{17}{20}-1)(\frac{1}{3}-3 ) ]\\\\-\frac{3}{8} [\frac{12}{5}-(-\frac{3}{20})(-\frac{8}{3}) ]\\\\-\frac{3}{8} [\frac{12}{5}-(\frac{24}{60} ) ]\\\\-\frac{3}{8} [\frac{12}{5}-\frac{2}{5}]\\\\-\frac{3}{8} [\frac{10}{5}]\\\\-\frac{30}{40} \\\\-\frac{3}{4}$

2)

$-\frac{5}{2}(\frac{3}{5}-2.33... ) -(\frac{5}{4}-0.25)\frac{22}{3} \\\\-\frac{5}{2}(\frac{3}{5}-\frac{7}{3}) -(\frac{5}{4}-\frac{1}{4} )\frac{22}{3} \\\\-\frac{5}{2}(-\frac{26}{15}) -(\frac{4}{4})\frac{22}{3} \\\\\frac{130}{30}-(1)\frac{22}{3} \\\\\frac{13}{3}-\frac{22}{3} \\\\-\frac{9}{3}\\\\ -3$

3)

$\frac{1}{3}-(2.777...:1.666...-15.333...)\\\\\frac{1}{3}-(\frac{25}{9}:\frac{5}{3}-\frac{46}{3})\\\\\frac{1}{3}-(\frac{75}{45}-\frac{46}{3})\\\\\frac{1}{3}-(\frac{5}{3}-\frac{46}{3})\\\\\frac{1}{3}-(-\frac{41}{3})\\\\\frac{1}{3}+\frac{41}{3}\\\\\frac{42}{3}\\\\14$

4)

$\frac{3}{5}-\frac{1}{5}[\frac{1}{3}-\frac{20}{36}+\frac{7}{5}]+\frac{7}{9} \\\\\frac{3}{5}-\frac{1}{5}[\frac{1}{3}-\frac{5}{9}+\frac{7}{5}]+\frac{7}{9} \\\\\frac{3}{5}-\frac{1}{5}[\frac{53}{45} ]+\frac{7}{9} \\\\\frac{3}{5}-\frac{53}{225}+\frac{7}{9} \\\\\frac{257}{225}$