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About this activity

Desafío de álgebra medio

Created by

Moises Andrada
Moises Andrada
Argentina

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Encuentra el valor de XOnline version

Desafío de álgebra medio

by Moises Andrada
1

1) 2x + 5 = 15. ¿Cuál es x?

2

2) 3(x − 2) = 9. ¿Qué valor de x?

3

3) (x/4) + 7 = 10. ¿X?

4

4) 5x − 2 = 3x + 8. ¿X?

5

5) (1/2)·x = 7. ¿X?

6

6) x − 3(2x + 1) = 0. ¿X?

7

7) 7 = 2x − 4. ¿X?

8

8) 4(x + 3) = 2x + 24. ¿X?

9

9) (3x + 5)/2 = x. ¿X?

10

10) 2x + 3 = −x + 3. ¿X?

Explicación

Restas 5 de ambos lados: 2x = 10, luego x = 5.

Divide por 3: x − 2 = 3; x = 5.

Resta 7 y multiplica por 4: x = 12.

Mueve 3x al otro lado y suma 2: 2x = 10; x = 5.

Multiplica ambos lados por 2: x = 14.

Distribute: x − 6x − 3 = 0 → −5x = 3 → x = −3/5.

Suma 4: 11 = 2x; x = 11/2 = 5.5.

Expande: 4x + 12 = 2x + 24 → 2x = 12 → x = 6.

Multiplica por 2: 3x + 5 = 2x → x = −5.

Suma x a ambos lados: 3x + 3 = 3; 3x = 0; x = 0.

 
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