Question

efectuar
a: 2/5 - 1/4 + 7/2 - 3/4
b: 3/5 x 1/4 x 7/2 - 4/3
c: -2/5 ÷ 1/4 ÷ -7/2 ÷ - 4/6

ayuda por favor

Answer 1

Respuesta:

a: 2/5 - 1/4 + 7/2 - 3/4=29/10

b: 3/5 x 1/4 x 7/2 - 4/3=97/120

c: -2/5 ÷ 1/4 ÷ -7/2 ÷ - 4/6=24/35

Explicación:

Answer 2

Respuesta:

Espero que te sirva :)

Explicación:

a)

$\frac{2}{5}-\frac{1}{4}+\frac{7}{2}-\frac{3}{4}=(\frac{2}{5}+\frac{7}{2})+(-\frac{1}{4}-\frac{3}{4})=(\frac{2*2+7*5}{10})+(-\frac{4}{4})= \frac{39}{10}-1=\frac{39-10}{10}=\frac{29}{10}$

b)

$\frac{3}{5}*\frac{1}{4}*\frac{7}{2}-\frac{4}{3}=\frac{21}{40}-\frac{4}{3}=\frac{21*3-4*40}{120}=\frac{63-160}{120}=\frac{97}{120}$

c)

$(-\frac{2}{5}):(\frac{1}{4}):(-\frac{7}{2}):(-\frac{4}{6})=(-\frac{2}{5})*(\frac{4}{1})*(-\frac{2}{7})*(-\frac{6}{4})=(-\frac{2}{5})*(-\frac{2}{7})*(-\frac{6}{1})=-(\frac{2*2*6}{5*7*1})=-\frac{24}{35}$