Question

When solving a system of equations by elimination, there are multiple correct

ways you can start. Which of the following is *NOT* a correct first step for the
given system? *
5x – 3y = -7
3x + 15y = -1
-25x + 15y = 35
3x + 15y = -1
15x - 9y = -21
15x + 75y = -5
25x – 15y = -35
3x + 15y = -1
5x - 15y = -7
3x + 15y = -1

Answer 1

Below.

Explanation:

Its the bottom right option.

They have only multiplied the - 3y by 5 in the first equation whereas they should have multiplied all the terms by 5.