How to Identify a Numerical Coefficient of a Term

By Tuesday Fuller
The coefficient here is the numeral 2 that comes before the variables "a" and "b" in 2ab.
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In algebra, a term is a part of a mathematical expression or equation. It can contain letters, called variables; coefficients, which are the numbers immediately preceding the variable; and constants, which are the unchanging factors, or numbers, within the mathematical statement. Equations usually contain more than one term and can include a variety of terms required to solve the problem. The easiest way to distinguish a numerical coefficient from a numerical constant is to look for a number and a variable with no operation sign between them, indicating multiplication. Coefficients can be positive or negative numbers.

Step 1

Examine the mathematical expression you're working on. For example, suppose you're given 5x + 3. There are two terms here, 5x and 3. Look for the variable. In this case, x is the variable.

Step 2

Find the numerical coefficient of x. Remember to look for the number before the variable. In this case, 5 is the numerical coefficient. The term 3 is a constant and is separated from the variable by a plus sign.

Step 3

Keep an eye out for negative coefficients. For example, suppose you're given the statement -y + 7 + 98. You would first identify the variable, y.

Step 4

Look for the numerical coefficient of y. In this case, a "1" is implied before the variable, but it's negative in this instance. Therefore, the coefficient of y is negative 1.