Question

5/8+1/4-3/2=
4/7+1/14-3/21=
1/5+5/6-3/9=​

Answer 1

Explicación paso a paso:

1.-

$\frac{5}{8} + \frac{1}{4} - \frac{3}{2} = \frac{5}{8} + \frac{2}{8} - \frac{12}{8}$

$= - \frac{5}{8}$

2.-

$\frac{4}{7} + \frac{1}{14} + - \frac{3}{21} = \frac{24}{42} + \frac{3}{42} - \frac{6}{42}$

$= \frac{21}{42}$

3.-

$\frac{1}{5}+\frac{5}{6}- \frac{3}{9}= \frac{6}{30} + \frac{25}{30} - \frac{3}{9}$

$= \frac{31}{30} - \frac{3}{9} = \frac{279}{270} - \frac{90}{270} = \frac{189}{270}$

$\frac{189}{270}= \frac{63}{90} = \frac{21}{30} = \frac{7}{10}$