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This problem can be having 2 probabilities:

1. If x of the both the sides is variable then, the answer will be 0




2. If x of both the sides is not variable (assume as x,y) the answer will be as follows:

x=2y ( after dividing with 2)


Hi Rose,

This is a bit of a trick question so I'm not surprised it's tripped you up.

The left hand side (LHS) of the equation, 2x, must be equal to the right hand side (RHS) of the equation, 4x.

So if we were to subtract '2x' from both the LHS and the RHS then we should still be left with equal amounts. i.e.

2x = 4x

-2x   -2x

0 = 2x

Now it might be a bit more obvious what x is. But for the sake of clarity, let us express the equation 'in terms of x' (this just means it says x = ...). I have 2x on the RHS and I want just x (or 1x). So I will divide by 2. And of course I must do this to both sides.

0 = 2x

/2   /2

0 = x     or     x = 0

I hope that helped :)

2x = 4x

4x - 2x = 0

2x = 0

x =0









2x=4x then x=4/2


Take 2x in the left hand side to the right hand side 

0 = 4x - 2x;

2x =0

only possible solution will be x = 0.


Please tell the answer

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