Question

resolver las siguientes sumas y restas
1) 2/3-1/2+1 .
2) -5/3+1/5-2.
3) 3/10-4/5+3/2.
4) -5/6+2/3-7/12​

Answer 1

Respuesta:

$1) \frac{2}{3} - \frac{1}{2} + 1 = \frac{4}{6} - \frac{3}{6} + \frac{6}{6} = \frac{4 - 3 + 6}{6} = \frac{7}{6}$

$2) - \frac{5}{3} + \frac{1}{5} - 2 = - \frac{25}{15} + \frac{3}{15} - \frac{30}{15} = \frac{ - 25 + 3 - 30}{15} = - \frac{52}{15}$

$3) \frac{3}{10} - \frac{4}{5} + \frac{3}{2} = \frac{3}{10} - \frac{8}{10} + \frac{15}{10} = \frac{3 - 8 + 15}{10} = \frac{10}{10} = 1$

$4) - \frac{5}{6} + \frac{2}{3} - \frac{7}{12} = - \frac{10}{12} + \frac{8}{12} - \frac{7}{12} = \frac{ - 5 + 8 - 7}{12} = - \frac{4}{12} = - \frac{1}{3}$