Question

preciso de toda a conta

Answer 1

a) mmc = 12
$\frac{5}{3} - \frac{3}{4} = \frac{20 - 9}{12} = \frac{11}{12} = 0.91..$
b)
$\frac{6}{7} + \frac{7}{2} = \frac{6 + 28}{8} = \frac{34}{8} = 4.25$
c)
$\frac{1}{2} \times \frac{2}{5} = \frac{1 \times 2}{2 \times 5} = \frac{2}{10} = 0.2$
d)
$\frac{6}{5} \times \frac{5}{6} = \frac{6 \times 5}{5 \times 6} = \frac{30}{30} = 1$
e)
$\frac{7}{6} \times \frac{32}{21} = \frac{7 \times 32}{6 \times 21} = \frac{224}{126} = 1.77...$
f)
$\frac{1}{9} \times \frac{9}{6} = \frac{1 \times 9}{16 \times 6} = \frac{9}{96} = \frac{9}{96} = 0.9375$