Question

Calculo de fracoes me ajudem por favor

Answer 1

Explicação passo-a-passo:

a)

2 + 4 =

3 6

MMC(3, 6) = 6

4 + 4 = 8 = 4

6 6 6 3

b)

1 + 1 =

9 3

MMC(9, 3) = 9

1 + 3 = 4

9 9 9

c)

3 -2 =

4 8

MMC(4, 8) = 8

6 -2 = 4 = 1

8 8 8 2

d)

2 -1 =

5 10

MMC(5, 10) = 10

4 -1 = 3

10 10 10

Answer 2

O valor obtido nas frações é de :

a) 4/3                     b) 4/9

c) 1/2                      d) 3/10

Montando as frações:

a)

$\dfrac{2}{3} + \dfrac{4}{6} \\\\\\\dfrac{2}{3} +\dfrac{2}{3} \\\\\\\dfrac{2\:+\:2}{3} \\\\\\\dfrac{4}{3}$

$-----$

b)

$\dfrac{1}{9} +\dfrac{1}{3} \\\\\\\dfrac{1}{9} + \dfrac{3}{9} \\\\\\\dfrac{1+3}{9} \\\\\\\dfrac{4}{9}$

$-----$

c)

$\dfrac{3}{4} -\dfrac{2}{8} \\\\\\\ \dfrac{3}{4} -\dfrac{1}{4} \\\\\\\dfrac{3-1}{4} \\\\\\\dfrac{2}{4} \\\\\\\dfrac{1}{2}$

$-----$

d)

$\dfrac{2}{5} -\dfrac{1}{10} \\\\\\\dfrac{4}{10} -\dfrac{1}{10}\\\\\\\dfrac{4-10}{10} \\\\\\\dfrac{3}{10}$

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