Chapter 4.5, Problem 67ES

(a)

To determine

To calculate: The solution of equations $a_{1}x+b_{1}y=c_1$ and $a_{2}x+b_{2}y=c_2$ for $x$ with the help of addition principal.

(b)

To determine

To calculate: The solution of equations, $a_{1}x+b_{1}y=c_1$ and $a_{2}x+b_{2}y=c_2$ for $y$ using addition method.