anonymous
  • anonymous
Consider this system of linear equations: y − x = -13 -4x + 3y = -51
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
choices (-12,1) (-12,-1) (12,-1)
anonymous
  • anonymous
Hi! I think I can help you with this :)
anonymous
  • anonymous
First of all, any ideas about how to get started, or are you completely stuck?

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More answers

anonymous
  • anonymous
im completelty stuck on the lesson its self :(
anonymous
  • anonymous
Okay, no problem!
anonymous
  • anonymous
ok
anonymous
  • anonymous
I can think of two possible ways to answer this question. One way would be to try and solve the equations yourself. Alternatively, we could just try each of the multiple choice answers and see which one works.
jameshorton
  • jameshorton
mines say 0,0
anonymous
  • anonymous
Any preference?
anonymous
  • anonymous
im thinking that it is -12,1
pooja195
  • pooja195
Id start with adding x to both sides y − x +x= -13+x y=-13+x The subtitute the y value in place of 3y -4x + 3(-13+x) = -51 <---solve for x
anonymous
  • anonymous
that looks confusing
pooja195
  • pooja195
Not at all :) \[\huge~\rm~-4x + 3(-13+x) = -51 \] Distribute the 3 \[\huge~\rm~ 3(-13+x) \]
anonymous
  • anonymous
-39+3x
pooja195
  • pooja195
Good -39+3x \[\huge~\rm~-4x -39+3x = -51 \] Combine like terms
anonymous
  • anonymous
im confused
pooja195
  • pooja195
See the x's ? Combine them since they are like terms -4+3=?
anonymous
  • anonymous
-1x
pooja195
  • pooja195
Good now add −x−39+39=−51+39 -51+39=?
anonymous
  • anonymous
-12
anonymous
  • anonymous
right?
pooja195
  • pooja195
its just 12
anonymous
  • anonymous
no bevause 51 is negative.
pooja195
  • pooja195
a negative divided by a negative is a postivie
anonymous
  • anonymous
but its not divided its added
pooja195
  • pooja195
Answer what i asked you -51+39=?
anonymous
  • anonymous
-12

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