Question

Matemática
1.Calcule as operações a seguir:

Answer 1

1 - a) 5/4 c) 3/7 b) 7/8 d) 2/15 e) 11/12 f) 9/10
2 - a) 12/35 b) 6/24 c) 21/40 d) 30/63

Answer 2

1)

a)

$\frac{5}{4}$

b)

$\frac{7}{8}$

c)

$\frac{7}{7} = 1$
d)

$\frac{2}{15}$

e)

$\frac{2}{3} + \frac{1}{4} = \frac{8}{12} + \frac{3}{12} \\ \\ \frac{11}{12}$

f)

$\frac{5}{10} + \frac{4}{10} = \frac{9}{10}$

2)

a)

$\frac{2}{5} \times \frac{6}{7} = \frac{12}{35}$

b)

$\frac{2}{6} \times \frac{3}{4} = \frac{6}{24} = \frac{1}{4}$

c)

$\frac{7}{10} \times \frac{4}{3} = \frac{28}{30} = \frac{14}{15}$

d)

$\frac{6}{9} \times \frac{7}{5} = \frac{42}{45} = \frac{14}{15}$