Question

a)1/2-1/4+3/4= b)1/3+8/9-25=c)3/4-7/5+3/10=​

Answer 1

Respuesta:

Explicación paso a paso:

a.

$\frac{1}{2} -\frac{1}{4}+ \frac{3}{4}\\ = \frac{1}{2}- \frac{4}{4}\\ =\frac{1}{2}-1\\ =\frac{1-2}{2}\\=-\frac{1}{2}$

b.

$\frac{1}{3}+ \frac{8}{9} -25\\=\frac{9+24}{27}-25\\ =\frac{33}{27}-25\\ =\frac{33-675}{27} \\=-\frac{642}{27}$

c.

$\frac{3}{4}- \frac{7}{5} +\frac{3}{10}\\ =\frac{15-28}{20}+ \frac{3}{10}\\ =-\frac{13}{20}+\frac{3}{10}\\ =\frac{-130+60}{200}\\=-\frac{70}{200} \\=-\frac{7}{20}$