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Solmyr

  • 3 years ago

For the following system, if you isolated x in the second equation to use the Substitution Method, what expression would you substitute into the first equation? 2x + y = 9 −x − y = −8 −8 + y −8 − y 8 + y 8 − y

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  1. CalebBeavers
    • 3 years ago
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    Well, what do you get when you isolate x in -x-y=-8

  2. Solmyr
    • 3 years ago
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    im not sure

  3. CalebBeavers
    • 3 years ago
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    Well. step 1: add y to both sides step 2:divide both sides by -1

  4. Solmyr
    • 3 years ago
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    -x -y= -8 1 1 -x = -7

  5. CalebBeavers
    • 3 years ago
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    Wheres y? -x-y=-8 add y to both sides -x=-8-y divide both sides by -1 x=8+y

  6. Solmyr
    • 3 years ago
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    x=8+y /1 /1

  7. CalebBeavers
    • 3 years ago
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    We're finished, you substitute 8+y

  8. Solmyr
    • 3 years ago
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    C

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