The elimination method is ideal for solving this system of equations. By which number must you multiply the second equation to eliminate the y-variable, and what is the solution for this system?
x+3y=42
2x - y = 14
OA Multiply the second equation by-3. The solution is x= 12, y=9.
OB
Multiply the second equation by-2. The solution is x= 12, y = 10.
Multiply the second equation by 2. The solution is x= 15, y = 9.
OD
Multiply the second equation by 3. The solution is x = 12. y = 10.