Question

What is the correct first step to solve this system of equations? x- 2y=3 and x+2y=6​

Answer 1

using elimination, the best first step is multiply the first equation by -3. multiply the second equation by 3 doesn't do anything to eliminate one of the unknowns. solving for x in the first equation or solving for y in the second equation are the substitution method, not the elimination method.

Explanation: