Question

Resolva as equação
a) -X = 9
b) -X = -2​

Answer 1

Resposta:

A) -9

B) 2

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Explicação passo-a-passo:

A)

-X = 9

-1 × (-X) = -1 × 9

X = -1 × 9

X = -9

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B)

-X = -2

-1 × (-X) = -1 × (-2)

X = -1 × (-2)

X = -2

x = 2

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