31356
  • 31356
Solve by substitution with 3 variables (Please show your steps) MEDAL AWARDED: x=4 x+y=-6 4x-3y+2z=26
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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Vocaloid
  • Vocaloid
hint: x = 4, we can replace "x" with "4" whenever we see it so if x + y = -6, what is y?
31356
  • 31356
y=-10
Vocaloid
  • Vocaloid
good! now we have x = 4 and y = -10 now we can plug those in to the third equation to find z

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31356
  • 31356
Right...
Vocaloid
  • Vocaloid
4x-3y+2z=26 16 + 30 + 2z = 26 z = ?
31356
  • 31356
z=-10
Vocaloid
  • Vocaloid
hm, not quite
31356
  • 31356
Let me double check...
Vocaloid
  • Vocaloid
2z = -10 z = ?
31356
  • 31356
-5
Vocaloid
  • Vocaloid
good! so our final answer is (4,-10,-5)
31356
  • 31356
Sorry about that, I misread it and solved too fast..
31356
  • 31356
Thank you! You make this problem seem so easy!

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