Question

1. Calcule as frações e, se possível, simplifique o resultado.
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Answer 1

Resposta:

e) 3/4

f) -1/6

g) 0

h) 2/5

Explicação passo a passo:

e) 7/20 + 1/20 + 7/20 = (7 + 1 + 7)/20 = 15/20 = 3/4

f) 5/18 + 11/18 - 13/18 = (5 + 11 - 13)/18 = -3/18 = -1/6

g) 7/6 + 4/6 - 5/6 + 3/6 - 9/6 = (7 + 4 - 5 + 3 - 9)/6 = 0/6 = 0

h) 1/20 + 3/20 + 11/20 - 7/20 = (1 + 3 + 11 - 7)/20 = 8/20 = 2/5

Answer 2

Explicação passo-a-passo:

e)

$\frac{7}{20} + \frac{1}{20} + \frac{7}{20} = \frac{7 + 1 + 7}{20} = \frac{15}{20} = \frac{3}{4}$

f)

$\frac{5}{18} + \frac{11}{18} - \frac{13}{18} = \frac{5 + 11 - 13}{18} = \frac{3}{18} = \frac{1}{6}$

g)

$\frac{7}{6} + \frac{4}{6} - \frac{5}{6} + \frac{3}{6} - \frac{9}{6} = \frac{7 + 4 - 5 + 3 - 9}{6} = \frac{0}{6} = 0$

h)

$\frac{1}{20} + \frac{3}{20} + \frac{11}{20} - \frac{7}{20} = \frac{1 + 3 + 11 - 7}{20} = \frac{8}{20} = \frac{2}{5}$