Question

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Answer 1

Resposta:

a) 5

_

6

Explicação passo-a-passo:

2+3=5

3+4=6

assim somando o de cima e o de baixo para obter a resposta

Answer 2

Pra somar frações vc tem q deixar os denominadores iguais fazendo o mmc..

a) O mmc de 3 e 4 é 12, então ficará assim:

$\frac{2}{3} +\frac{3}{4} =\\\\\frac{8}{12} +\frac{9}{12} =\\\\\frac{17}{12}$

b)

O mmc entre 6 e 4 é 12 tbm, então...

$\frac{5}{6} +\frac{7}{4} =\\\\\frac{10}{12} +\frac{21}{12} =\\\\\frac{31}{12}$

c)

Entre 4,12, 8 será 24....

$\frac{3}{4} +\frac{2}{12} +\frac{4}{8} =\\\\\frac{18}{24} +\frac{4}{24} +\frac{12}{24} =\\\\\frac{34}{24}$

d)

$\frac{4}{9} +\frac{2}{3} +\frac{3}{12} =\\\\\frac{16}{36} +\frac{24}{36} +\frac{9}{36} =\\\\\frac{49}{36}$

e)

$\frac{6}{5} +\frac{4}{15} =\\\\\frac{18}{15} +\frac{4}{15} =\\\\\frac{12}{15}$

f)

$\frac{9}{12} +\frac{7}{24} =\\\\\frac{18}{24} +\frac{7}{24} =\\\\\frac{25}{24}$