In your own words, describe the process for solving a system of linear equations using the addition aka elimination method.

To solve a system of linear equations, we eliminate a variable from the equations by multiplying its coefficient with a suitable number so that they cancel out each other.

Then we are left with only one variable and we add/subtract them to get their value.

When we get the value of one variable, we can substitute it in either of the equations to find the value of the other variable.

b. astronomers

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b