8th Grade · Expressions & Equations
Like Terms
8.EE.C.7b
Definition
Terms that have the same variable raised to the same exponent. They can be combined by adding or subtracting their coefficients.
Teach it
Where it is taught, with guided notes, practice, homework, an exit ticket and an interactive Teacher Deck.
Examples
- 3x + 2x = 5x (like terms).
- 3x and 3x2 are unlike terms — different exponents.
Key rule
Only combine like terms — the variable part must match exactly.
Memory hook
Same variable, same exponent — combine them.