Resolver 3-2a<20 | Microsoft Math Solver

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https://math.stackexchange.com/questions/2474247/determinant-of-3-times-3-matrix-4i-3-2a

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-2a<20-3

Resta 3 en ambos lados.

-2a<17

Resta 3 de 20 para obter 17.

a>-\frac{17}{2}

Divide ambos lados entre -2. Dado que -2 é negativo, a dirección da diferenza cambiou.

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