Question

1.Calcule as frações e, se possível, simplifique o resultado.
a) 1/10+7/10
b) 5/6-1/6
c) 1/10+7/10-3/10
d) 7/15-3/15-1/15
e) 7/20+1/20+7/20
f) 5/18+11/18+13/18
g) 7/6+4/6-5/6+3/6-9/6
h) 1/20+3/20+11/20-7/20
me ajudemmm por favor ​

Answer 1

$resolucao \\ \\ \\ fracoes \: com \: denominadore \: iguais \: repete \: o \: denominador \: e \: efetua \: a \: adicao \: ou \: subtracao \: dos \: numeradores \\ \\ \\ \\ a = \frac{1}{10} + \frac{7}{10} = > \frac{8}{10} = \frac{4}{5} \\ \\ \\ b = \frac{5}{6} - \frac{1}{6} = > \frac{4}{6} = \frac{2}{3} \\ \\ \\ c = \frac{1}{10} + \frac{7}{10} - \frac{3}{10} = > \frac{5}{10} = \frac{1}{2} \\ \\ \\ d = \frac{7}{15} - \frac{3}{15} - \frac{1}{15} = > \frac{3}{15} = \frac{1}{5} \\ \\ \\ e = \frac{7}{20} + \frac{1}{20} + \frac{7}{20} = > \frac{15}{20} = \frac{3}{4} \\ \\ \\ f = \frac{5}{18} + \frac{11}{18} + \frac{13}{18} = \frac{29}{18} \\ \\ \\ g = \frac{7}{6} + \frac{4}{6} - \frac{5}{6} + \frac{3}{6} - \frac{9}{6} = > \frac{0}{6} = 0 \\ \\ \\ h = \frac{1}{20} + \frac{3}{20} + \frac{11}{20} - \frac{7}{20} = > \frac{8}{20} = \frac{2}{5} \\ \\ \\ espero \: ter \: ajudado \:$