Question

What is the value of a in the equation 3a + b = 54, when b = 9?

Answer 1

3a+9=54
3a=54-9
3a=45
a=45/3
a=15

Answer 2

3a+b=54 --- (1)

Given - b=9

Now substituting value of b as 9 in equation (1)
3a+b=54
=>3a+9=54
=>3a=54-9
=>3a=45
=>a=45/3
=>a=15

I hope this will help you....✌️✌️
thank u:-)