Question

A dog weighs 40 pounds and the veterinarian thinks it needs to lose 9 pounds Mikala wrote the equation x + 9 = 40 to represent this situation Kirk wrote the equation 40-x=9 which equation is correct? Enter another equation that represents the situation

Answer 1

Both equations are correct because the veterinarian recommended that the weight the dog should have is 31 pounds. Another equation that represent the situation is:

31 = x

Explanation:

Let's analyze the equation written by Mikala:

x + 9 = 40

x = 40 - 9

x = 31

Now, let's solve for x the equation written by Kirk:

40 - x = 9

- x = 9 - 40

- x = -31

x = 31

Both equations are correct because the veterinarian recommended that the weight the dog should have is 31 pounds. Another equation that represent the situation is:

40 - 9 = x

31 = x