Question

The sum of two numbers is 20. One number is one less than twice the second number. What are the two numbers?

Answer 1

Answer: Hope this helps.

13, 7

Step-by-step explanation:

Number one is 13

Number two is 7

Well 7 x 2 = 14, 14-1 = 7, and 7+13 = 20 making the answers true.

I figured out this number by eliminating numbers, I started with 5, ended with 8 to make a range of the possible numbers. Since 5 was too low and 8 was too high I knew the number had to be either 6 or 7, so I did 7 and I got the answer.

Answer 2

Answer:

7 and 13

You can set up a simple equation to solve this: x + (2x-1) = 20

The x stands for the second, smaller number because the larger number is one less than twice it. When added together, they equal 20.

Now, you just solve for x. It goes as follows:

x + 2x - 1 = 20

3x - 1 = 20

3x = 21

x = 7

Since one number is 7, the other number has to be 13 to add up to 20.

Hope this helps!!! :)