3 years ago

3 a plus b equals 54, when b equals 9?

Mathematics

2 answers:

Anton [14]3 years ago

8 0

Answer:

3a+b= 54

3a+9=54

3a=54-9

3a=45

a=45/3

a= 15

tatyana61 [14]3 years ago

3 0

Answer:

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

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