# 2x+4x-6=?

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**Simplify 2x+4x-6**

We can add like terms (i.e. those terms with the same variables to the same powers) so we add 2x to 4x to get 6x.

Note that 6x and -6 are **not **like terms since the term -6 doesnot have a variable, so we cannot add them.

Thus the answer will be 6x-6.

** The question as originally written indicates an **equation**. Equations can be *solved*, while **expressions** can be *simplified* or *evaluated*. If this had been an equation, then there would be no unique answer, as the solution depends onthe value of x -- for each value of x the expression takes on a new value. **

2x + 4x = 6x

6x-6 is the answer

2x+4x-6= 6x-6