### Home > A2C > Chapter 7 > Lesson 7.3.3 > Problem 7-187

7-187.

Perform each of the following matrix operations without using a calculator. If the operation is

What have you learned about matrix operations so far?

Multiply through by the 2 before you add.

What must be true about the dimensions of two matrices in order to multiply them?

What must be true about the dimensions of two matrices in order to add them?