How do you know which equation to solve for y and x with the substitution method?

Question

anonymous · Answer

@hartnn @RadEn @robtobey

anonymous · Answer

@thomaster @Compassionate @Taylor<3sRin

anonymous · Answer

For example you have these two equations: 7x - 2y = 4 and 3x + y = 11

anonymous · Answer

How do you know which one you solve for y?

anonymous · Answer

@LastDayWork @annas @undeadknight26

hartnn · Answer

it really depends on the 2 equation,
since i see "3x + y = 11" we can say its easy to isolate 'y' rather than x , so solve for y first in this case

if we had something like x+12y =33, then its easier to isolate x here, so solve for x and use that as substution

anonymous · Answer

Is that always the case?

anonymous · Answer

For example 7x - 2y = 4, how can you tell which one is easier to isolate?

lastdaywork · Answer

@asdlkjfhaskldjfh 
It's just a matter of choice..

anonymous · Answer

Okay, so there's no way to tell

lastdaywork · Answer

Dividing by 2 is easier than 7; so i'll go with y :)

anonymous · Answer

Oh okay, that's a good point! haha thanks :)

hartnn · Answer

right, whatever you feel easier, go with that :)

anonymous · Answer

Okay, I would give you a medal but I can't thanks anyway :)

lastdaywork · Answer

Keep coming to OS :)

hartnn · Answer

no problem, i am anyways not here for medals, if you understand thats my medal :)

undeadknight26 · Answer

What he always says but he appreciates the appreciation XD

texaschic101 · Answer

you deserve a medal hartnn :)

hartnn · Answer

thanks a lot :D

lastdaywork · Answer

I hope the discussion is not over my comment..it was directed at the newcomer..