jazzyfa30
  • jazzyfa30
Solve the system by using substitution: x - y = 5 2x+y = 13 Select one: a. (6,-1) b. (1,6) c. (-6,-1) d. (6,1)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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jazzyfa30
  • jazzyfa30
@PatrickJordon help
anonymous
  • anonymous
Ok, What you Want to do is plug in each number for "x" and "y", i did that for you and here's what i got:: X-Y=5 (6)-(1)=5 2x+Y=13 2(6)+(1)=13 So that makes your answer D (6,1)
jazzyfa30
  • jazzyfa30
thank you I don't know why but everyone else was giving me confusing equations

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anonymous
  • anonymous
Substitute The Numbers In For The Letters Much Easier @Luigi0210
jazzyfa30
  • jazzyfa30
here is another one
jazzyfa30
  • jazzyfa30
Use the elimination method to solve the system of equations: 2a+3b=12 5a -3b=9 Select one: a. (2,-3) b. (-3,2) c. (3,2) d. (2,3)
anonymous
  • anonymous
Bah, idk this one haha
jazzyfa30
  • jazzyfa30
@amistre64 help
Luigi0210
  • Luigi0210
add them up and it'll make it so much simpler
amistre64
  • amistre64
substituting in for x and y IS a form of substitution :)
anonymous
  • anonymous
Ok its C i missed typed it: 2a+3b=12 2(3)+3(2)=12 AND 5a-3b=9 5(3)-3(2)=9
jazzyfa30
  • jazzyfa30
but this is elimination method................I'm confused
anonymous
  • anonymous
dunno if thats right but i tried xD
jazzyfa30
  • jazzyfa30
ok
Luigi0210
  • Luigi0210
2a+3b=12 5a -3b=9 ------------------------------ 7a=21 a=3 ------------------------------ 2(3)+3b=12 6+3b=12 3b=6 b=2 -----------------------------------
anonymous
  • anonymous
# I was Right :)

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