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3.5 Perform Basic Matrix Operations Add Matrices Subtract Matrices Solve Matric equations for x and y Key Vocabulary: • • • • • • Matrix: Dimensions: Elements: Equal: Scalar: Scalar Multiplication: Dimensions and Elements • Name the dimensions of the matrices and how many elements are in each matrix. • Ex: Adding and Subtracting Matrices • To add or subtract matrices, simply add or subtract elements in corresponding positions. • Add two matrices together: • Subtract two matrices: Multiply a Matrix by a Scalar • Scalar: a real number used to multiply to each element in the matrix. Ex: Solve a Matrix Equation: • Step 1: Identify the variables in the matrices. • Step 2: Set up equations using elements in corresponding positions from all the matrices. • Step 3: Solve the equation for the variable. • Ex: