Question

When seven times a number is decreased by 8, the result is 20. What is the number?

Answer 1

7x4=28 , the number is 4

Explanation:

Answer 2

Answer: The number is 4

First, set up the equation and make the unknown number the variable x.

The equation will be : 7x-8=20

The next steps will be to solve for x:

1. Add 8 to both sides. This will cancel out the 8 on the left side of the equation and will leave the right side of the equation as 28. (7x=28)
2. Divide both side by 7. This will cancel out the 7 on the left side of the equation and leave you with 4 on the right side. (x=4)

Your answer is x=4