SME
Grade 8 Math
Linear equations with variables on both sides
The main lesson, then each kind of problem it solves.
Linear equations with variables on both sides
Main lesson
Negatives on a balance
Use this for “4x − 7 = −2x + 11” or “2x − 3 = −x + 6”.
Brackets first
Use this for “3(2x + 1) = 4x + 15”.
Clear the fraction
Use this for “3/4 x + 2 = −7”.
One, none or infinitely many?
Use this for “Does 5x + 2 = 5x − 9 have one solution, none, or infinitely many?”
Steps to solve 3x + 4 = x + 10
Use this for “What do you do first to solve 3x + 4 = x + 10?”