Respuesta :
Answer:
15
Step-by-step explanation:
3 a + b = 54
Given that b=9
We substitute b as 9 into the equation; 3 a + 9 = 54
3 a = 54 - 9
3 a = 45
Then, divide each side by 3 to get the value of a; 3 a /3 = 45 / 3
a = 45 / 3
a = 15
Answer:
15
Step-by-step explanation:
3 a + b = 54
Given that b=9
We substitute b as 9 into the equation; 3 a + 9 = 54
3 a = 54 - 9
3 a = 45
Then, divide each side by 3 to get the value of a; 3 a /3 = 45 / 3
a = 45 / 3
a = 15