Answer:
Step-by-step explanation:
Comment
The sum of 12 + 8k equals 48.
Notice the key words. The sum of 12 and ... gives you 12 + ....
Quantity 8 times a number k gives you 8k
So far what you have so far is 12 + 8k
The result is 12 + 8k = 48
Equation
12 + 8k = 48
Solution
12 + 8k = 48 Subtract 12 from both sides
12-12 + 8k = 48 - 12 Combine
8k = 36 Notice the 12s are gone. Divide by 8
8k/8 = 36/8
k = 4 1/2 or 4.5
Answer
k = 4 1/2 or 4.5
