
Missing Numbers in Equations
7th Grade · Math · 30 min
Lesson Preview
Learning Objective
I can solve addition and subtraction equations with a missing variable where the sum or difference is less than or equal to 25.
- 1
In algebra, solving an equation means figuring out the unknown values or variables.
- 2
To keep an equation balanced, you must do the same thing to both sides.
- 3
To isolate a variable when something is being subtracted, you must add to both sides.


