anonymous
  • anonymous
In the literal equation 7z - 3x = 18 Z - 5x + 1 How do I know which one to flip?
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
is the second eqn correct?mean where is the equality sign?
anonymous
  • anonymous
What i mean by flip is in the equation x - y = 4 4y - x = 14 I flip the x - y = 4 to x = 4 + y
anonymous
  • anonymous
Sorry equation is supposed to be 7z - 3x = 18 Z - 5x = 1

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anonymous
  • anonymous
look z has got coefficient 1, so its easy to handle with that
amistre64
  • amistre64
you flip which ever one you want; make a choice and stick with it
anonymous
  • anonymous
Because my Algebra instructor flipped the first one
anonymous
  • anonymous
So it is a matter of choice, it doesn't matter which one you flip? You will get the same answer out of both?
amistre64
  • amistre64
it doesnt matter which variable you start with, or which equation .... just do what you think is easiest for you to solve with ...
anonymous
  • anonymous
that will lead to fractional value, a bot hard..nothing wrong with it anyways
anonymous
  • anonymous
bit*
anonymous
  • anonymous
She came up with 7z = 18 + 3x z + 18 + 3x / 7 / = fraction
amistre64
  • amistre64
and that is completely usable ..... but does it have to be done that way? no
anonymous
  • anonymous
and then it was 2(18 + 3x / 7) - 5x = 1
amistre64
  • amistre64
since z=z=z=z.... it doesnt matter how you 'solve' for z; its gonna retain the same value thruout the process
anonymous
  • anonymous
To avoid fractions (which I hate) I would flip the 2z - 5x = 1
amistre64
  • amistre64
an orange ball is still an orange ball regardless of whether its in the bathtub or the dogpen...
amistre64
  • amistre64
z = z ; so go with whats easiest for you to play with lol
anonymous
  • anonymous
Are you saying either way I will get an equation?
amistre64
  • amistre64
yes
anonymous
  • anonymous
* Fraction
amistre64
  • amistre64
you might end up using fractions; dunno ..... i havent solved it ;)
anonymous
  • anonymous
I am going to try ad solve it! (The other way)
anonymous
  • anonymous
*and
amistre64
  • amistre64
fractions can be cleared tho; just multiply it all by the bottom number
anonymous
  • anonymous
Now that is something I actually know. lol
anonymous
  • anonymous
Thanks for the help once again!
amistre64
  • amistre64
yw ;)
anonymous
  • anonymous
I have 7z - 3x = 18 2z = 1 + 5x And now I dk what to do

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