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livelaughlove

  • 3 years ago

how do you solve x+y=4 x-y=-8 solving it as a linear equation using addition?

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  1. sugarface
    • 3 years ago
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    x and y are 2 for x-y=4 x is 10 and y is 2 for x-y=8

  2. beens
    • 3 years ago
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    simultaneous equations add both equations to get rid of the y's in this question 2x = -4 x=-2

  3. beens
    • 3 years ago
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    Subs in any of the two equations to get y -2+y=4 in first equation y=6

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spraguer (Moderator)
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