Répondre :
1) Mike’s mother age: 4*x = 4x
Mike’s sister age: x-6
2) x is the age of Mike, so:
x + 4x + x-6 = 48
3) a. solve the equation to find mike’s age:
x+4x+x-6 = 48
6x-6 = 48
6x=48+6
6x = 54
x = 54/6
x = 9
Mike is 9 years old.
b. When Mike was born, his mother was 27
(because: now she is 4*9 = 36 years old, 9 years ago, she had 36-9 = 27 years old).
Mike’s sister age: x-6
2) x is the age of Mike, so:
x + 4x + x-6 = 48
3) a. solve the equation to find mike’s age:
x+4x+x-6 = 48
6x-6 = 48
6x=48+6
6x = 54
x = 54/6
x = 9
Mike is 9 years old.
b. When Mike was born, his mother was 27
(because: now she is 4*9 = 36 years old, 9 years ago, she had 36-9 = 27 years old).
Bonjour,
1.
Mike is x years old
His mother is 4 times his age -> 4x
His sister is 6 years younger than him -> x - 6
2. x + 4x + x - 6 = 48
3. a. x + 4x + x - 6 = 48
6x - 6 = 48
6x = 48 + 6
6x = 54
x = 54/6
x = 9
Mike is 9 years.
His mothers : 9 × 4 = 36
His sister : 9 - 6 = 3
Verification : 9 + 36 + 3 = 48
b. 36 - 9 = 27
When Mike was born, his mother was 27.
En espérant t'avoir aidé(e) ! ^^
1.
Mike is x years old
His mother is 4 times his age -> 4x
His sister is 6 years younger than him -> x - 6
2. x + 4x + x - 6 = 48
3. a. x + 4x + x - 6 = 48
6x - 6 = 48
6x = 48 + 6
6x = 54
x = 54/6
x = 9
Mike is 9 years.
His mothers : 9 × 4 = 36
His sister : 9 - 6 = 3
Verification : 9 + 36 + 3 = 48
b. 36 - 9 = 27
When Mike was born, his mother was 27.
En espérant t'avoir aidé(e) ! ^^
Merci d'avoir visité notre site Web, qui traite d'environ Mathématiques. Nous espérons que les informations partagées vous ont été utiles. N'hésitez pas à nous contacter pour toute question ou demande d'assistance. À bientôt, et pensez à ajouter ce site à vos favoris !