The variable x is a placeholder for a number. Think of it like a box where the number goes inside.
7x = we have 7 boxes
2x = two boxes
7x - 2x = 5x represents the idea of starting off with seven boxes and taking away two of them to end up with five boxes at the end.
Given data
*The given expression is 7x - 2x
Simplify the above-given expression as
Thus, the simplified expression equals to 5x
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