The challenge is how to convert English statements to Math workings. If the problem is particularly complex you may need. In any Math problem there is a paramount need to read the question carefully from beginning to.
Solve algebra equations easily with no problem - OK maybe in about 7 seconds.
In the case of x 2x 4 you have a variable term on both sides of the equation. Therefore 3 divided 13 is 9 plus 1 equals 10. Put numbers in place of the words to set up a regular math equation. Understanding the question is not the hard part.