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GabriellaGurl101Best ResponseYou've already chosen the best response.0
When solving systems of equations, how do you determine what method to use? For the next can you please help me solve it and what all you did please
 one year ago

GabriellaGurl101Best ResponseYou've already chosen the best response.0
here is the problem 6x  4y = 54 9x + 2y = 69
 one year ago

slaaibakBest ResponseYou've already chosen the best response.2
You generally look at what method will be the easiest/fastest to do.
 one year ago

slaaibakBest ResponseYou've already chosen the best response.2
With that equation, you can see that the y coefficients are two and 4. So, it looks like a minor effort to just multiply the one equation by two, and adding them together to eliminate the yvariable
 one year ago

precalBest ResponseYou've already chosen the best response.0
I would do elimination but Cramer's rule is one of the fastest way to solve the system
 one year ago

GabriellaGurl101Best ResponseYou've already chosen the best response.0
Thank You but you can please help me on the problem too
 one year ago

GabriellaGurl101Best ResponseYou've already chosen the best response.0
Can you also tell what you did like step by step please and thank you :)
 one year ago

slaaibakBest ResponseYou've already chosen the best response.2
Sure. First multiply the second equation by 2: x2: 9x + 2y = 69 > 18x + 4y = 138 List the two equations and add: 6x 4y = 54 18x + 4y = 138 __________________ 12x + 0y = 84 12x = 84 x = 7 Now sub x back into any of the equations: 6(7)  4y = 54 42  4y = 54 4y =  12 y = 3 so x=7 and y = 3
 one year ago

GabriellaGurl101Best ResponseYou've already chosen the best response.0
you know how like on the second thing that you did well what goes in the middle of 6x  4y
 one year ago

GabriellaGurl101Best ResponseYou've already chosen the best response.0
I can just use this and this is correct right??
 one year ago

slaaibakBest ResponseYou've already chosen the best response.2
nothing, I just spaced it so it is kinda in the same line of sight
 one year ago

slaaibakBest ResponseYou've already chosen the best response.2
yes, you can. It's correct.
 one year ago

GabriellaGurl101Best ResponseYou've already chosen the best response.0
thank you soo much
 one year ago

GabriellaGurl101Best ResponseYou've already chosen the best response.0
wait what proccess is this??
 one year ago

GabriellaGurl101Best ResponseYou've already chosen the best response.0
substittution??? haha i spelled it wrong lol
 one year ago

slaaibakBest ResponseYou've already chosen the best response.2
Nope this is elimination. My pleasure
 one year ago

GabriellaGurl101Best ResponseYou've already chosen the best response.0
Okay thank you
 one year ago
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