Say x=5. Replace the x with 5. 12(4*5-5)52=? 12(20-5)52=? 12(15)52=? 180*52=9360 x does not equal 5
Now lets try 12. 12(4*12-5)52=? 12(48-5)52=? 12(43)52=? 516*52=26832 x does not equal 12
Repeat this process with the other two numbers. Just replace x with one of the numbers. Make sure there is no negative signs on any of the numbers. All signs are crucial. Welcome.
