1.
— A symbol (like x) that represents an unknown value.
2.
— A number multiplied by a variable in a term (e.g., 3 in 3x).
3.
— A value that does not change (a lone number in an expression).
4.
— A mathematical statement that two expressions are equal (has =).
5.
— A single number, variable, or product of numbers and variables.
6.
— A combination of numbers, variables, and operations (no =).
7.
— To get the variable alone on one side of an equation.
8.
— An operation that reverses another (addition ↔ subtraction, multiplication ↔ division).
9.
— The value(s) that make an equation true.
10.
— Replacing a variable with a number or another expression.
11.
— To combine like terms and perform operations to make
12.
— Property: a(b + c) = ab + ac; distributes multiplication over addition.
13.
— To add or subtract like terms to make an expression simpler.
14.
— Terms that have the same variable raised to the same power and can be combined.
15.
— Keeping both sides of an equation equal when solving (do same to both sides).
16.
— A relation that compares two expressions (>, <, ≥, ≤).
