The plus sign is written as a cross of horizontal and vertical lines:

+

The plus sign indicates addition operation of 2 numbers or expressions.

For example:

3 + 4

means 3 plus 4, which is the addition of 3 and 4, which is equal to 7.

The plus sign is located on the computer's keyboard near the backspace button. In order to write it, you should press shift and = buttons.

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