Question

faça as divisões e subtrações das frações: a)4 2/3+1/2= b) 3 1/2-2/5 c)6/5-2/5​

Answer 1

a)

$\dfrac{2}{3} + \dfrac{1}{2} = \dfrac{4 + 3}{6} = \dfrac{7}{6}$

b)

$3 \frac{1}{2} = \frac{3.2 + 1}{2} = \frac{7}{2}$

$3 \dfrac{1}{2} - \dfrac{2}{5} = \dfrac{7}{2} - \dfrac{2}{5} = \dfrac{35 - 4}{10} = \dfrac{31}{10}$

C)

$\dfrac{6}{5} - \dfrac{2}{4} = \dfrac{4}{5}$