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Southerngirl265

  • 3 years ago

find the solution of the system. Use substitution. 2x – y = –7 4x – y = –4

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  1. Roynsky
    • 3 years ago
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    Same as the last one. Find the two terms in each equation you can add together canceling out the term. For example if you add both equations tell me what you would end up with?

  2. Southerngirl265
    • 3 years ago
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    what do you mean?

  3. Roynsky
    • 3 years ago
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    Okay hand on I'll try to draw it out for you so you understand what I'm doing:

  4. Roynsky
    • 3 years ago
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    |dw:1359180003805:dw|

  5. Roynsky
    • 3 years ago
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    Now solve for "x". Then sub in "x" value into an equation to find the "y" value

  6. shaik0124
    • 3 years ago
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    x=3/2

  7. shaik0124
    • 3 years ago
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    |dw:1359180519486:dw|

  8. shaik0124
    • 3 years ago
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    y=10

  9. shaik0124
    • 3 years ago
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    hope u understand

  10. Southerngirl265
    • 3 years ago
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    so x is 1.5

  11. Southerngirl265
    • 3 years ago
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    in decimal form

  12. Roynsky
    • 3 years ago
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    Pretty much.

  13. shaik0124
    • 3 years ago
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    ya x=1-5@south

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