Question

A system of equations is given below.
2x + 7y = 1
-3x – 4y = 5

Create an equivalent system of equations by replacing the first equation by multiplying the first equation by an integer other than 1, and adding it to the second equation.

Answer 1

B - Use any method to solve the equivalent system of equations (the new first equation with the original second equation).
C - Prove that the solution for the equivalent system is the same as the solution for the original system of equations.