The United Nations Convention on the Protection of the Rights of All Migrant Workers and Members of Their Families defines migrant worker as follows: The term migrant worker refers to a person who is engaged or has been engaged in a remunerated activity in a State of which he or she is not a national.
A mathematical expression can be as simple as 2 + 4 or as complex as -4xy + 8 x - 5(x/y). All mathematical expressions contain terms and each term has a coefficient, the numerical factor.
Both use numbers and variables; however it is all based on the arrangement. So let's take look at both to determine their use and relationship. An expression is a combination of numbers, variables, and symbols to be calculated. An equation contains expressions that are separated by an equals sign. A further look at the mathematical expression can be explained with numbers and variables such as: 7x + y - 4.