Question

2) Efetue as operações, simplificando quando necessário

( "/" pra representar que é uma fração)

a- 1/2 + 2/3 - 3 1/2=

b- 3/2 + 0,3 - 2/5=

c- 7/5 × 2/3 × 4/3=

d- 36/25 ÷ 4/3=
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Answer 1

Explicação passo-a-passo:

Boa tarde e bons estudos ❤

a- 1/2 + 2/3 - 3 1/2= esse 3 está multiplicando 1/2 ?

b- 3/2 + 0,3 - 2/5=

$\frac{3}{2} + 0.3 - \frac{2}{5} \\ \frac{3}{2} + \frac{3}{10} - \frac{2}{5} \\ \frac{15 + 3 - 4}{10} \\ \frac{14}{10} \\ \frac{7}{5}$

c- 7/5 × 2/3 × 4/3=

$\frac{7}{5} \times \frac{2}{3} \times \frac{4}{3} \\ \frac{7 \times 2 \times 4}{5 \times 3 \times 3} \\ \frac{56}{45}$

d- 36/25 ÷ 4/3=

$\frac{36}{25} \div \frac{4}{3} \\ \frac{36}{25} \times \frac{3}{4} \\ \frac{9}{25} \times 3 \\ \frac{9}{25} \times \frac{3}{1} \\ \frac{9 \times 3}{25 \times 1} \\ \frac{27}{25}$

Answer 2

Resposta:

Leia abaixo

Explicação passo-a-passo:

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MMC(2,3) = 6

$\boxed{\frac{1}{2} + \frac{2}{3} - \frac{3}{2}}$

$\boxed{\frac{3 + 4 - 9}{6}}$

$\boxed{\boxed{-\frac{1}{3}}}$

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MMC(2,10,5) = 10

$\boxed{\frac{3}{2} + \frac{3}{10} - \frac{2}{5}}$

$\boxed{\frac{15 + 3 - 4}{10}}$

$\boxed{\boxed{\frac{7}{5}}}$

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$\boxed{\frac{7}{5} . \frac{2}{3} . \frac{4}{3}}$

$\boxed{\boxed{\frac{56}{45}}}$

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$\boxed{\frac{36}{25} : \frac{4}{3}}$

$\boxed{\frac{36}{25} . \frac{3}{4}}$

$\boxed{\boxed{\frac{27}{25}}}$

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