Question 199062: {3x - y=2
{-2 + 5y=6
Answer by RAY100(1637)   (Show Source):
You can put this solution on YOUR website! (1) 3x -y =2,,,,( 3x -2) =y
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(2) -2x +5y =6,,,,,,,,,,,,,,added x to complete the problem
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subst (1) into (2)
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-2x + 5 (3x -2) = 6
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-2x +15x -10 =6
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13x = 16
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x=16/13
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subst in (1),,,,y = 3 (16/13) -2 = (48 - 26) / 13 = 22/13
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checking
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3(16/13) -(22/13) = (48 - 22) /13 = 26 / 13 = 2,,,,ok
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-2(16/13) + 5 ( 22/13) = ( -32 + 110) / 13 = 78 /13 =6,,,,,ok
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