Question

"When 7 is added to 3 times a certain number,the result 22"

Answer 1

x = 5

Explanation:

"When 7 is added to 3 times a certain number, the result 22"

Write this sentence algebraically.

7 + 3x = 22

We need to try and get 3x by itself to find its value, so subtract 7 from both sides.

3x = 22-7 = 15

3x = 15

3x simply means 3 multiplied by x.

So:

x = 15/3 = 5

x=5

the "certain number" is 5.

To check:

7 + 3x5 should equal 22.

7 + 15 = 22.

Hope this helps.

Answer 2

The statement "when 7 is added to 3 times a certain number, the result is 22" can be written as an equation:

3x + 7 = 22

To solve for the unknown number (which we'll call "x"), we need to get x by itself on one side of the equation. We can do this by subtracting 7 from both sides of the equation:

3x + 7 - 7 = 22 - 7

Simplifying the left side gives us:

3x = 15

Finally, we can solve for x by dividing both sides of the equation by 3:

x = 15 / 3

= 5

So, the number that we were looking for is 5.

Explanation: