Simplify: Grouping and combining similar terms
Substitute: replace one variable with a number or new variable.
Equivalent: Having the same value
Coefficient: A number used to multiply a variable.
Product: the result of a multiplication
Highest Common Factor (HCF): The largest factor (or number that multiplies to give a term)
Inequality: An inequality compares two values, showing if one is less than, greater than, or simply not equal to another value.