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Question
Submitted by marahl on Mon, 2013-05-27 18:22
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answered 2 time(s)
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x + y = 3 2x + 5y = 12

x + y = 3 2x + 5y = 12

Answer
Submitted by mathsexpert on Tue, 2013-05-28 00:02
teacher rated 5 times
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price: $2.00

complete solutions

body preview (44 words)

  x x y = 3 xx  ----------   xxx

 2x x xx x xx xxxxxxxxxxx xx xxx

  xxxx xxx   x xxx x 3 - y xx

   substitute x x 3 - y in xxx

xx 2(3 - xx + 5y = 12

xx 6 x 2y x 5y x 12   ,  open xxxxxxxxxxx

xx   xx = xx - 6 xxx xxxxxxxxx xx & x 2y   xxx subtract 6 xxxx xxxx sides

xx xxxx = 6

  xx x x xxx x 2

  x = x x x = x x 2 x 1

  xxxxxx   x = 1  , x = xxx


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Answer
Submitted by Homework-Helper on Tue, 2013-05-28 15:59
teacher rated 0 times
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price: $0.25

100% Correct solution

body preview (42 words)

x + Y = 3

xx + 5Y x 12

xx

xxxxxxxxxxxxxx + Y x xxxxx 5X+5Y=15------

----------------------------(2X x xx = 12)x(-1)= -2X-5Y=-12-----

xx

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

xx

------------------------------------------3X=3  ------

xx

           

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxX=1----------------------------------------------------

 

X x Y = x

x x Y x 3------

----------------------------Y=2----------------------------------------

 

 


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