2 times a number equals that number plus 5

The phrase a number means an arbitrary variable, let's call it x. 2 times a number means we multiply 2 by x:2x That number plus 5 means we add 5 to the number xx + 5 The phrase equals means we set both expressions equal to each other2x = x + 5

2 times a number equals that number plus 5

The phrase a number means an arbitrary variable, let's call it x.

2 times a number means we multiply 2 by x:
2x

That number plus 5 means we add 5 to the number x
x + 5

The phrase equals means we set both expressions equal to each other
2x = x + 5 <-- This is our algebraic expression

If you want to take this further and solve this equation for x, type this expression in the search engine and we get:
x = 5

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