Curated OER
Solving System of Equations by Addition or Subtraction
In this online math worksheet, high schoolers solve systems of equations by using addition and subtraction . This excellent resource allows the students to check their answers, and to get "hints" should they run into difficulties. A...
Alabama Learning Exchange
Alex: Systems on a Mission
After solving one system of equations by the methods of graphing, elimination using addition or subtraction, elimination using multiplication, and substitution, students will be given four systems to be solved by one of each of the four...