Mathematics in Senior One: What does it mean without X? Answer in the most straightforward terms, not too official. . . explain

This is the number. Do you know what this is?

For example, the formula 3x+3-3x (which we know is equal to 3) does not contain the x term.

But if it is 3x+3-2x, we get x+3 after simplification, which obviously contains the x term, because we don't know how much x+3 is equal to.

Generally speaking, when solving an equation, you change X to one side of the equal sign, and there is no X on the other side, that is, you change the term without X to the same side.

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