Question

Me ajudem por favor!​

Answer 1

a)

$\frac{2}{4} + \frac{5}{4} = \frac{2 + 5}{4} = \frac{7}{4}$

b)

$\frac{3}{6(5)} + \frac{1}{5(6)} = \frac{15}{30} + \frac{6}{30}$

$= \frac{15 + 6}{30} = \frac{21 \div 3}{30 \div 3} = \frac{7}{10}$

c)

$\frac{8}{10(2)} + \frac{9}{20(1)} = \frac{16}{20} + \frac{9}{20}$

$= \frac{25 \div 5}{20 \div 5} = \frac{5}{4}$