anonymous
  • anonymous
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? 3x + y = 8 -x - 2y = -10
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
kay all you have to do is just substitute one equation into the other. So just isolate any variable in one equation then substitute that into the second equation to solve for the other variable
anonymous
  • anonymous
2y + 10?
anonymous
  • anonymous
k so for this question isolate x or y in any equation. I choose to rearrange the second equation. Rearrange (2) -x - 2y = -10 -x = 2y - 10 * multiply both sides by -1 x = 10 - 2y substitute x = 10 - 2y into equation (1) and solve for y

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anonymous
  • anonymous
no i mean is 2y + 10 the answer to the question
anonymous
  • anonymous
i dont get what ur saying...... answer to what question
anonymous
  • anonymous
oh no the answer is wrong
anonymous
  • anonymous
10 - 2y is what you would substitute
anonymous
  • anonymous
so its -2y - 10?
anonymous
  • anonymous
no its -2y + 10

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