Question

Resolva e simplifique se possivel as fraçoes::

1-) 4/5 - 1/5

2-) 1/2+2/3

3-) 5/6 + 2/3

Answer 1

1-) 4/5 - 1/5 = 
      4 - 1 / 5 =
      3 / 5

2-) 1/2     + 2/3 =  mmc 6
      3.1/6 + 2.2/6 =
      3 + 4 / 6 =
      7 / 6

3-) 5/6 + 2/3 = mmc 6
     1.5/6 + 2.2/6 =
     5 + 4 / 6 =
     9 / 6 simplificando por 3
     3/2

Answer 2

Bom dia!

Exercício 1:

$\frac{4}{5}-\frac{1}{5}= \frac{4-1}{5}= \boxed{\frac{3}{5}}$

Exercício 2:

MMC(2,3)= 6

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

Exercício 3:

MMC(6,3)= 6

$\frac{5}{6}+\frac{2}{3}= \frac{5+4}{6}=\frac{9}{6} =\boxed{ \frac{3}{2}}$