Respuesta :

Without a value for x, 4x + x is equal to 5x. If a variable is by itself, you can put a 1 as a coefficient. For example, g = 1g.

1g simply means 1 times g, which is the same as just g.

You cannot add 4x and 1 since they are not like terms. If you have a value for x, THEN you can add them, after substituting the value of x into x.

4x+x=5x

No, you cannot add 4x+1, because you don’t know the value of x, so you cannot add them.
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