Question

calcule as aiçoes e subtraçoes abaixo e se possivel simplique as a 5/7+3/7 b 9/2+15/2 c 24/80+35/80 d 15/20-7/20 e 65/100+30/100 f 14/6-7/3 g 6/4-3/6 h 12/5+18/7

Answer 1

Explicação passo-a-passo:

$a) \frac{5}{7} + \frac{3}{7} = \frac{5 + 3}{7} = \frac{8}{7}$

$b) \frac{9}{2} + \frac{15}{2} = \frac{9 + 15}{2} = \frac{24}{2} = 12$

$c) \frac{24}{80} + \frac{35}{80} = \frac{59}{80}$

$d) \frac{15}{20} - \frac{7}{20} = \frac{15 - 7}{20} = \frac{8}{20} = \frac{2}{5}$

$e) \frac{65}{100} + \frac{30}{100} = \frac{95}{100} = \frac{19}{20}$

$f) \frac{14}{6} - \frac{7}{3} = \frac{7}{3} - \frac{7}{3} = 0$

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

$h) \frac{12}{5} + \frac{18}{7} =$

$m.m.c = 35$

$\frac{(7 \times 12) + (5 \times 18)}{35} = \frac{84 + 90}{35} = \frac{174}{35}$