the difference between five and the product of seven and a number equal to nine.

Question

parthkohli · Answer

Let's say that the number is $x$:$$7x - 5 = 9 $$Solve this equation.
Hint: Start by adding 5 to both sides.

ghazi · Answer

i guess it's 5-7x=9, so x would be you can calulate

parthkohli · Answer

No, @ghazi You may apply logic and see how it can't be that.

ghazi · Answer

because you can't have 9 by my equation

parthkohli · Answer

No, apply your conscience and look how you're getting such a complicated answer for your equation:P

ghazi · Answer

if you'll substitute x= -4/9 you'll have 9 @ParthKohli

ghazi · Answer

well i just went on the language and its sequence

parthkohli · Answer

Actually you can have two answers here.

ghazi · Answer

and you tried to have the easier one so you just wrote equation in a straight forward manner

parthkohli · Answer

Ghazi, I know what you mean, but you must see how it's a little tedious to get such a solution.

parthkohli · Answer

7x should be greater than 5 according to the intuition, so you'd make it $7x - 5 = 9$.

ghazi · Answer

okay :) let her accept what she thinks is easier one....

ghazi · Answer

well if you'll substitute x=-4/7 which is also greater than 7*x as per your solution still it will be in accordance

parthkohli · Answer

Well, the intuition says so.