What is the difference of the rational expressions below? 4x/9-2x/9

There are several unique characteristics of qualitative research that make it distinct from quantitative research. describe the aspects of qualitative research and the elements of design that contribute to the rigor of the work. what actions of the researcher can compromise the integrity of the findings?

Why do interests rates on loans to be lower in a weak economy than in a strong one

Math it's appreciated. (picture provided)