Question 58005
1) x=-2
2)x=2
3)x=1/2
4)x=-50
5)x=8, y=12
6)x+y=14 --- (1)
  3x-4y=0 --- (2)
(1)*4 implies
4x+4y=56
3x-4y=0
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7x   = 56
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 x   = 56/7
 x   = 8
8+y  = 14 implies y=14-8=6 implies y=6