Question

POR FAVOR ES PARA HOY CON EXPLICACION

Answer 1

Explicación paso a paso:

a)

 $\frac{3}{5}+\frac{1}{5}+\frac{2}{5}= \frac{6}{5}\quad \left(\mathrm{Decimal:\quad }\:1.2\right)\\\mathrm{Aplicar\:las\:propiedades\:de\:las\:fracciones}:\quad \frac{a}{c}+\frac{b}{c}=\frac{a+b}{c}\\=\frac{3+1+2}{5}\\\mathrm{Sumar:}\:3+1+2=6\\=\frac{6}{5}$

b)

$\frac{2}{9} +\frac{1}{9}+\frac{5}{9} =\frac{8}{9}\quad \left(\mathrm{Decimal:\quad }\:0.88888\dots \right)\\\mathrm{Aplicar\:las\:propiedades\:de\:las\:fracciones}:\quad \frac{a}{c}+\frac{b}{c}=\frac{a+b}{c}\\=\frac{2+1+5}{9}\\\mathrm{Sumar:}\:2+1+5=8\\=\frac{8}{9}$

c)

$\frac{4}{7} -\frac{1}{7} +\frac{2}{7} =\frac{5}{7}\quad \left(\mathrm{Decimal:\quad }\:0.71428\dots \right)\\\mathrm{Aplicar\:las\:propiedades\:de\:las\:fracciones}:\quad \frac{a}{c}\pm \frac{b}{c}=\frac{a\pm \:b}{c}\\=\frac{4-1+2}{7}\\\mathrm{Sumar:}\:4-1+2=5\\=\frac{5}{7}$

d)

$\frac{5}{11}+\frac{2}{11}-\frac{1}{11} =\frac{6}{11}\quad \left(\mathrm{Decimal:\quad }\:0.54545\dots \right)\\\mathrm{Aplicar\:las\:propiedades\:de\:las\:fracciones}:\quad \frac{a}{c}\pm \frac{b}{c}=\frac{a\pm \:b}{c}\\=\frac{5+2-1}{11}\\\mathrm{Sumar:}\:5+2-1=6\\=\frac{6}{11}$

Coronita porfa :)