Question

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

Answer 1

a = 15 when b = 9

Explanation:

3 a plus b equals 54 in symbolic terms is 3a + b = 54.

Now, if b = 9, 3a + b = 54 becomes 3a + 9 = 54.

Subtracting 9 from both sides yields an equation for 3a:

3a = 45

Dividing both sides by 3 yields a = 15 when b = 9