3 years ago

La suma de 3 más el doble de un número es igual a ese número pero con signo negativo.llamemos x al número desconocido.

Mathematics

1 answer:

nydimaria [60]3 years ago

4 0

Answer:

x = -1

Step-by-step explanation:

3 + 2x = -x

- 2x - 2x

3 = -3x

divides 3 por ambos lados del signo igual

x = -1

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