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sloppycanada
 one year ago
Is there a difference between solving an equation using the elimination method instead of the substitution method?
really bad at the substitution method, much rather use the elimination.
sloppycanada
 one year ago
Is there a difference between solving an equation using the elimination method instead of the substitution method? really bad at the substitution method, much rather use the elimination.

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Jack1
 one year ago
Best ResponseYou've already chosen the best response.0no, no difference in answers, just difference in the approach, s'all

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1elimination method takes out a variable (x or y) and then you can just solve (for x or y) meanwhile substitution means x or y has to be something and then it gets plugged back into the first or second equation... combine like terms solve for x or y lalalalal but both procedures should produce the same results.

sloppycanada
 one year ago
Best ResponseYou've already chosen the best response.0Oh okay, so if I solve this question  Solve 4x + 3y = 13 by the substitution method. x + y = 4 using substitution I'll get the same answer?

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1you should get the same answer.

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1trying to think what would be easier.. ah take the second equation and have either x or y by itself

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1take x+y = 4 and rearrange it having either x = ? or y = ?

Jack1
 one year ago
Best ResponseYou've already chosen the best response.04x + 4y = 16 4x = 16  4y 4x = 13  3y 16  4y = 13  3y is this elimination or am i doing it wrong again?

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1ok I'll give an example where elimination can be used x+y=2 xy=5 now use elimination method @Jack1

Jack1
 one year ago
Best ResponseYou've already chosen the best response.02y = 5+y ...? im serious, i dont remember this properly hey

sloppycanada
 one year ago
Best ResponseYou've already chosen the best response.0So for this I got x = 1 and y = 3

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1for my example x+y=2 xy=5 add the two equations together @Jack1

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1@sloppycanada that's right when you plug in x =1 and y=3 your equations will be true!

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.14x + 3y = 13 x + y = 4 since x = 1 and y =3 4(1)+3(3) =13 4+9=13 13=13 Similarly 1+3=4 4=4

Jack1
 one year ago
Best ResponseYou've already chosen the best response.0right, now i remember, cheers @UsukiDoll

sloppycanada
 one year ago
Best ResponseYou've already chosen the best response.0Alright so point is  I don't need to use the sub method when it says too.
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