In the literal equation
7z - 3x = 18
Z - 5x + 1
How do I know which one to flip?

- anonymous

In the literal equation
7z - 3x = 18
Z - 5x + 1
How do I know which one to flip?

- katieb

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- anonymous

is the second eqn correct?mean where is the equality sign?

- 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

Sorry equation is supposed to be
7z - 3x = 18
Z - 5x = 1

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## More answers

- anonymous

look z has got coefficient 1, so its easy to handle with that

- amistre64

you flip which ever one you want; make a choice and stick with it

- anonymous

Because my Algebra instructor flipped the first one

- 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

it doesnt matter which variable you start with, or which equation .... just do what you think is easiest for you to solve with ...

- anonymous

that will lead to fractional value, a bot hard..nothing wrong with it anyways

- anonymous

bit*

- anonymous

She came up with 7z = 18 + 3x
z + 18 + 3x / 7
/ = fraction

- amistre64

and that is completely usable ..... but does it have to be done that way? no

- anonymous

and then it was
2(18 + 3x / 7) - 5x = 1

- amistre64

since z=z=z=z.... it doesnt matter how you 'solve' for z; its gonna retain the same value thruout the process

- anonymous

To avoid fractions (which I hate) I would flip the 2z - 5x = 1

- amistre64

an orange ball is still an orange ball regardless of whether its in the bathtub or the dogpen...

- amistre64

z = z ; so go with whats easiest for you to play with lol

- anonymous

Are you saying either way I will get an equation?

- amistre64

yes

- anonymous

* Fraction

- amistre64

you might end up using fractions; dunno ..... i havent solved it ;)

- anonymous

I am going to try ad solve it! (The other way)

- anonymous

*and

- amistre64

fractions can be cleared tho; just multiply it all by the bottom number

- anonymous

Now that is something I actually know. lol

- anonymous

Thanks for the help once again!

- amistre64

yw ;)

- anonymous

I have 7z - 3x = 18
2z = 1 + 5x
And now I dk what to do

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