Question

fracciones,calcular

a)
$3 + \frac{2}{7}$
b)
$- \frac{5}{4} + \frac{3}{9}$
c)
$- \frac{3 }{5} + \frac{2}{10}$
d)
$- \frac{3}{5} + \frac{2}{10}$
e)-
$\frac{2}{7 } - \frac{4}{14}$
f)-
$\frac{3}{8} + \frac{2}{16}$
me ayudan plis ​

Answer 1

Explicación paso a paso:

fracciones, calcular:

a)

$3 + \frac{2}{7}=\frac{(3)(7) +2 }{7} =\frac{21+2}{7} =\frac{23}{7}$

b)

$\frac{-5}{4} + \frac{3}{9}=\frac{(-5)(9) +(3)(4) }{36} =\frac{-45+12}{36} =\frac{-33}{36} =\frac{-11}{12}$

c)

$\frac{-3}{5} + \frac{2}{10}=\frac{(-3)(2) +(2)(1) }{10} =\frac{-6+2}{10} =\frac{-4}{10} =\frac{-2}{5}$

e)

$\frac{-2}{7} - \frac{4}{14}=\frac{(-2)(2) -(4)(1) }{14} =\frac{-4-4}{14} =\frac{-8}{14} =\frac{-4}{7}$

f)

$\frac{-3}{8} + \frac{2}{16}=\frac{(-3)(2) +(2)(1) }{16} =\frac{-6+2}{16} =\frac{-4}{16} =\frac{-1}{4}$