Let's call the number x.
The difference of a number and 7 is x - 7.
Four times the difference is 4(x - 7).
According to the problem, this expression is equal to 12:
4(x - 7) = 12
Now, let's solve for x:
4x - 28 = 12
Adding 28 to both sides of the equation:
4x = 40
Dividing both sides of the equation by 4:
x = 10
Therefore, the number is 10.
Four times the difference of a number and 7 is 12. What is the number?
10
-4
16
20
1 answer
4 answers