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# Exercises. Addition and subtraction of matrices

Rules. Addition and subtraction of matrices.

You can add and subtract matrices of same size, as result you get a matrix of the same size.

Addition of matrices (sum of matrices) A + B is the operation of finding the matrix C, all of whose elements are equal to the sum of pairwise all relevant elements of the matrices A and B, that is, each element of the matrix C is

сi,j = ai,j + bi,j

Subtraction of matrices (difference of matrices) A - B is the operation of finding the matrix C, all of whose elements are pairwise differences of all relevant elements of the matrices A and B, that is, each element of the matrix C is

сi,j = ai,j - bi,j

Exercises. Addition of two matrices (sum of matrices) and the subtraction of two matrices (difference of matrices).

Given two matrices A and B:

 A = 20 13 -17 -8 1 -3 -16 11 20

 B = -2 -1 12 -14 -12 10 1 0 -19

Find the value of the matrix: C = A
+
B

Select the size of the matrix С:
Number of rows:
Number of columns:

Write the answer and press the button "Submit".

 C = ... 