Question

Calcule:
a) 7/8 + 1/2 =
b) 5/9 + 1/9 =
c) 4/7 - 6/21 =
d) 2/6 * 5/4=
e) 8/3 / (2/5) =
f) √25/81 =
g)(3/7)² =
me ajudem?​

Answer 1

a)

$\frac{7}{8} + \frac{1}{2} = \frac{11}{8}$

b)

$\frac{5}{9} + \frac{1}{9} = \frac{2}{3}$

c)

$\frac{4}{7} - \frac{6}{21} = \frac{2}{7}$

d)

$\frac{2}{6} \times \frac{5}{4} = \frac{5}{12}$

e)

$\frac{8}{3} \div ( \frac{2}{5} ) = \frac{20}{3}$

f)

$\sqrt{25} \div 8 = \sqrt[5]{2} \div 4$

g)

$( \frac{3}{7}) ^{2} = \frac{9}{49}$