how to solve |X-7|=7

Sagot :

First, transpose 7 from the left to the other side..

So, it goes like this...

x= 7 + 7

The -7 became positive because once you transpose a number, the sign will change (example: negative becomes positive and positive becomes negative once you transpose it)

Then add...

x = 14

Check:

x - 7 = 7

Substitute the x...

14 - 7 = 7; Correct
Were going to tranpose it. X-7 equals 7
Move the  negative 7 to the other side, remember, every time you move. Your going to change the sign. So it will be X equals 7+7 which is 14. So the answer is 14, check. Replace the x with 14. So it will be 14-7 equals 7. Which  is true!