Question

3b-9=15 I will medal for a step by step answer! :)

Answer 1

add 9 to each side. Then you have 3b=24. Divide by 3 to get b=8

Answer 2

3b - 9 = 15
adding 9 to both sides keeps them equal to each other
3b = 15 + 9 = 24

dividing both sides by 3, b = 8.

Answer 3

Reorder the terms:
-9 + 3b = 15

Solving
-9 + 3b = 15

Solving for variable 'b'.

Move all terms containing b to the left, all other terms to the right.

Add '9' to each side of the equation.
-9 + 9 + 3b = 15 + 9

Combine like terms: -9 + 9 = 0
0 + 3b = 15 + 9
3b = 15 + 9

Combine like terms: 15 + 9 = 24
3b = 24

Divide each side by '3'.
b = 8

Simplifying
b = 8

Answer 4

Thank you! :)

Answer 5

Your welcome!