What is X plus X plus X plus X simplified in algebra?

X + X + X + X = 4x

It is the same as 4 x X = 4x

Think numbers .

3 + 3 + 3 + 3 = 12 = 4(3)

or

4 x 3 = 12 = 4(3)

In mathematics instead of writing a 'string of plusses(+), it is easier to write the number of plusses multiplied to the given number.