anonymous
  • anonymous
Part 1: Solve the following system of equations. Please show your work to receive full credit. x - y = 10 2x + y = 2 Part 2: Explain which method you chose to solve the system and why you felt it was the best choice.
Mathematics
chestercat
  • chestercat
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hartnn
  • hartnn
Add those two equations first and tell me what u get?
anonymous
  • anonymous
combine like terms first
anonymous
  • anonymous
3x+y=12

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anonymous
  • anonymous
is that Part 2 part of the equation ?@Sammy5592
anonymous
  • anonymous
shaik0124
  • shaik0124
|dw:1346076054334:dw|
anonymous
  • anonymous
shaik0124
  • shaik0124
-3y=18 y=-6 x-(-6)=10 x+6=10 x=10-6 x=4
shaik0124
  • shaik0124
therefore x=4,y=-6 is answer
anonymous
  • anonymous
can u write the firsrt 1 out like that
hartnn
  • hartnn
@sammy5592 how did u get 3x+y=12 u should get 3x=12 check again.
shaik0124
  • shaik0124
i multiplied first equation by 2 then subtracted from 2nd equation ..this gives y .put y value in any one of the equations u will get x,theefore x,y u got is solution
anonymous
  • anonymous
no i mean how you did the second equation
shaik0124
  • shaik0124
did u got @sammy5592
anonymous
  • anonymous
???
shaik0124
  • shaik0124
did u understand the solution i replied for above problem
anonymous
  • anonymous
yes
anonymous
  • anonymous
part 2 ???
shaik0124
  • shaik0124
it is substitution method
shaik0124
  • shaik0124
it is best bcoz if u find 1 value then automatically it is easy to find another value
anonymous
  • anonymous
Thanks :)

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