Question

Me ajudem pfv

d) 3 y 7
-- y - -- + --- y
4 5 2

Answer 1

Explicação passo-a-passo:

d)

$\sf \dfrac{3y}{4}-\dfrac{y}{5}+\dfrac{7y}{2}$

$\sf mmc(4,5,2)=20$

$\sf \dfrac{3y}{4}-\dfrac{y}{5}+\dfrac{7y}{2}$

$\sf =\dfrac{3y\cdot5-y\cdot4+7y\cdot10}{20}$

$\sf =\dfrac{15y-4y+70y}{20}$

$\sf =\dfrac{11y+70y}{20}$

$\sf =\red{\dfrac{81y}{20}}$

Answer 2

Resposta:

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Explicação passo-a-passo:

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