Calcular 21 / (1/2 - 1/3)

Passo 1

Vamos calcular a expressão 21 / (1/2 - 1/3). Esse exercício envolve operações com frações e entender como manipular divisões e subtrações entre elas. Para resolver, vamos precisar saber como subtrair frações e como dividir por uma fração, que na verdade é multiplicar pelo seu inverso.

Passo 2

Primeiro, vamos resolver o denominador da fração: . Para subtrair frações, elas precisam ter o mesmo denominador. O mínimo múltiplo comum de 2 e 3 é 6.

Passo 3

Reescrevemos as frações com o denominador 6:
y = sen(x^2)
Agora, podemos subtrair:
y = sen(x^2)

Passo 4

Agora, temos a expressão:
y = sen(x^2)
Dividir por uma fração é o mesmo que multiplicar pelo seu inverso. Então:
y = sen(x^2)

Resposta

126

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<html><head></head><body><div>Calcular <span class="math-inline ">
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