Identify parts of an expression

A constant is a fixed value that does not change. In the expression $$2x - 5$$ , the constant is -5.

A coefficient is a number that multiplies a variable. For example, in $$7y$$ , 7 is the coefficient.

A variable is a letter or symbol that represents an unknown number. For example, in the expression $$x + 3$$ , x is a variable.

Count the number of separate parts in the expression. For example, in $$7x + 5^3 - 1$$ , there are 3 terms.

A term is a single part of an expression, which can be a number, variable, or a combination of both. A coefficient is the number in front of a variable in a term.

It represents an algebraic expression with three terms: 3x, 4y, and -2.

Parentheses indicate which operations to perform first in an expression. For example, in $$(2 + 3) \times 4$$ , you add 2 and 3 before multiplying by 4.

The constant is -10.

The coefficient of 'a' is 5.

Like terms are terms that have the same variable raised to the same power. For example, $$3x$$ and $$5x$$ are like terms.