When you add 2x and 3x together, you simply combine the coefficients (the numbers in front of the x) while keeping the variable x the same. Here’s how it works:
2x + 3x = (2 + 3)x = 5x
So, 2x plus 3x equals 5x. This is because you are adding two quantities of x and three quantities of x, which gives you a total of five quantities of x.