Answer:
Explanation:
3(23-2b) + 3b = 48
1. Use the distributive property and distribute the 3 before the parenthesis
 3(23-2b) (make sure you read the (-) as part of the 2b so it's -2b
 69 - 6b
2. 69 - 6b +3b = 48 (combine like terms...the bs: -6b + 3b)
 69 -3b=48
 
3. 69 - 3b = 48 (subtract 69 from both sides)
 -69 -69
4. -3b = -21 (divide both sides by negative three...we want the b to be +
 /-3 /-3
Answer: b = 7
So, C is your answer