We have to find the equation for three times a number is three more than twice the number.
Let the number is x.
Three times a number = 3x
Three more than twice the number. = 3+2x
These two equations should be equal.
Hence, we have
![3x=3+2x](https://img.qammunity.org/2019/formulas/mathematics/high-school/ym8fh6uv5uusj5sasic8r2eh09tuq3su2v.png)
Therefore, the equation 3x = 3 + 2x can be used to find the unknown x.
A is the correct option.