What is the best first step to solve the system using elimination? 6x - 5y = 4 and 9x + y = -17
multiply the first equation by 5
multiply the second equation by 5
solve for x in the first equation
solve for y in the second equation

Question

What is the best first step to solve the system using elimination? 6x - 5y = 4 and 9x + y = -17
multiply the first equation by 5 
 multiply the second equation by 5 
 solve for x in the first equation 
 solve for y in the second equation

amistre64 · Answer

elimination doesnt "solve for" anything first

amistre64 · Answer

since the other 2 options are equally valid intermediary steps .... there is no real "best" to choose.  There is one that can lead to a quicker solution as long as you dont mess up any of the other intermediary steps .....

anonymous · Answer

If you multiply the second equation by 5 you can eliminate y..