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anonymous
 one year ago
Medal
Solve the following system of equations by any method.
x + y = 32
x + z = 39
y + z= 47
anonymous
 one year ago
Medal Solve the following system of equations by any method. x + y = 32 x + z = 39 y + z= 47

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LynFran
 one year ago
Best ResponseYou've already chosen the best response.1which method u prefer to use

LynFran
 one year ago
Best ResponseYou've already chosen the best response.1what i meant was elimination , substitution ... matrix

Hero
 one year ago
Best ResponseYou've already chosen the best response.0Subtract the 2nd from the 1st to get yz=7

Hero
 one year ago
Best ResponseYou've already chosen the best response.0Then you'll have : yz =7 y+z=47 Add the equations together to eliminate z then solve for y.

Hero
 one year ago
Best ResponseYou've already chosen the best response.0That's the easiest approach here.

Hero
 one year ago
Best ResponseYou've already chosen the best response.0You should have gotten 2y=40 not y=0

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh sorry i subtracted

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@LynFran do you understand this

LynFran
 one year ago
Best ResponseYou've already chosen the best response.1here ur substitution method and yes i know all 3 method thats y i ask which u prefer ok we can rewrite the 3rd equation as y=47z we can also rrewrite the 2nd equation to get x=39z now subs the 2 equations about into the 1st equation to get x+y=32 39z+47z=32 862z=32 8632=2z 54=2z 27=z now sub z=27 into the 3rd equation above to get y+z=47 y+27=47 y=4727 y=20 now sub y=20 into 1st equation to get x+y=32 x+20=32 x=3220 x=12

Hero
 one year ago
Best ResponseYou've already chosen the best response.0Elimination is the simplest and most efficient method to Use here.

LynFran
 one year ago
Best ResponseYou've already chosen the best response.1yea i agree but @harz360 prefer substitution

Hero
 one year ago
Best ResponseYou've already chosen the best response.0The goal is to solve using the least amount of steps

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0when i see all the steps thats when i understand it

Hero
 one year ago
Best ResponseYou've already chosen the best response.0It's a matter of efficiency not preference.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I would have taken the first 2 equations...and eliminated the x's...then go from there

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0but thanks a lott @LynFran

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@Hero thanks so much

LynFran
 one year ago
Best ResponseYou've already chosen the best response.1here the elimination method using 1st and 2nd equation subtract we get yz=3239 now using the 3rd equation subtract yz=7 y+z=47 we get zz=747 2z=54 z=54/2 z=27 now sub z=27 into 3rd equation we get y+z=47 y=4727 y=20 now sub y=20 in 1st equation we get x+y=32 x+20=32 x=3220 x=12

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0this method seems confusing by the subtraction method seems easier to follow

Hero
 one year ago
Best ResponseYou've already chosen the best response.0That WAS the subtraction method. Lyn just wrote it awkwardly

LynFran
 one year ago
Best ResponseYou've already chosen the best response.1no thats the elimination method in details

Hero
 one year ago
Best ResponseYou've already chosen the best response.0Subtraction/Elimination Method

Hero
 one year ago
Best ResponseYou've already chosen the best response.0Interchangeable description

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ohh i understand both when i see the steps which lyn has shown nicely
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