This post is a type of problem that could appear on the Mathematics Knowledge section of the ASVAB.  Is is an example of combining like terms in algebra.  As one of America’s ASVAB tutors, I see the importance of focusing on algebra in my ASVAB prep course to boost my students Mathematics Knowledge score. This example involves simplifying in algebra. This is one of many topics that I cover to provide my students with help in ASVAB math.  Try to solve this problem.  The explanation will be posted tomorrow.