Question

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Answer 1

Resposta:

Explicação passo-a-passo:

1)A)29/12=2,41

B)21/12=1,75

C)3/10=0,3

D)12/10=1,2

Answer 2

Resposta:

Vamos lá!

$\dfrac{5}{4} +\dfrac{2}{3} +\dfrac{1}{2} =\\\\mmc=12\\\\\dfrac{15+8+6}{12} =\dfrac{29}{12}$

$\dfrac{1}{8} +\dfrac{5}{6} =\\\\mmc=24\\\\\dfrac{3+20}{24} =\dfrac{23}{24}$

$\dfrac{2}{5} -\dfrac{1}{10} +0,2\\\\\\\dfrac{2}{5} -\dfrac{1}{10} +\dfrac{2}{10} =\\\\mmc=10\\\\\dfrac{4-1+2}{10}=\\\\\\\dfrac{5}{10}=\dfrac{1}{2}$