desharisNedR
Answered

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.

Verified Answer :

Neuron

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

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