Your students will get lots of practice with this Systems of Linear Equations with Three and Four Variables Task Card Resource.Your students practice solving systems of equations with three or more variables. Choose your method!! Elimination, Substitution, Matrices, or the Graphing Calculator. These problems are adaptable to all methods including using technology. Included: Task Cards: There are two sets of cards, one in Black and White and the other Color # 1 - 8 are 3 equations,