a student is using the elimination method to solve the system of equations below. what is the best first step?
2x - 6y = 2
5x 4y = 28
1. multiply the first equation by 2 and the second equation by 3.
2. multiply the first and second equation by 2.
3. multiply the first equation by 4 and the second equation by 2.
4. multiply the first equation by 5 and the second equation by 6.
The best first step
for the elimination method would be: 1. multiply the first equation by 2 and the second equation by 3. 2x - 6y = 2 /*2 5x + 4y = 28 /*3 ____________ 4x - 12y = 4 15x + 12y = 84 ____________ 4x - 12y + 15x + 12y = 4 + 84 19x = 88 x = 88/19
