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AlekseyPX
3 years ago
14

From the set {6, 7, 11}, use substitution to determine which value of x makes the equation true.

Mathematics
2 answers:
kotykmax [81]3 years ago
3 0
11 if you multiply 11 by both the number and and the variable you’ll get 11x-55=66. Add 55 to each side which will give you 121 then divide that by 11
mina [271]3 years ago
3 0

Answer:

11

Step-by-step explanation:

1.Como primer paso debemos realizar la distributiva para destruir ese paréntesis :

11x-55=66

2. Después procedemos a dejar la variable a despejar en lado izquierdo del igual y las constantes al lado derecho :

11x=55+66

11x=110

3. Por ultimo procedemos a despejar esa x que esta acompañada de una constante de tal forma la constante que esta multiplicando pasara a dividir con la otra constante :

x=110/11

x=11

De tal manera la respuesta es aceptable ya que 11 se encuentra dentro del conjunto {6, 7, 11}


Otra manera es sustituir el 6,7,11 para saber  cual cumple la ecuación

x=6

11(6-5)=?66

11(1)=11---->Esto es incorrecto 11 No es igual a 66

x=7

11(7-5)=?66

11(2)=22---->Esto es incorrecto 22 No es igual a 66

x=11

11(11-5)=?66

11(6)=66---->Esto es correcto 66 Si es igual a 66

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