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Mathematics 20 Online
OpenStudy (anonymous):

solve system of equations using substitution method

OpenStudy (anonymous):

OpenStudy (anonymous):

first start by solving one of the equations for one variable

OpenStudy (anonymous):

@zordoloom original question

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

i would chose to solve for y in the second equation

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

so do i substitute 0 for x

OpenStudy (anonymous):

No, not exactly

OpenStudy (anonymous):

start by getting y by itself and everything else to the other side

OpenStudy (anonymous):

Rearrange either equation for either variable

OpenStudy (anonymous):

-4.5x-2y=-12.5 -4.5x=12.5+2y x=12.5+2y/-4.5

OpenStudy (anonymous):

so the first equation would look like y=.25(25-9x)

OpenStudy (anonymous):

so for the second one it would be y=3.25x+.75

OpenStudy (anonymous):

Or the first equation could look like x=1/9(25-4y)

OpenStudy (anonymous):

thus why i chose to do the second equation it looks simpler

OpenStudy (anonymous):

ok ok

OpenStudy (anonymous):

Now plug in the y equation or x equation into the appropriate variable in the second equation and simplify

OpenStudy (anonymous):

anyways after you have done that imput that equation into the other equation

OpenStudy (anonymous):

@NickR is correct, it would be simpler to solve the second equation for the y variable and then plug it into the first equation.

OpenStudy (anonymous):

but who takes the easy way out?

OpenStudy (anonymous):

there is no fun in that

OpenStudy (anonymous):

-4.5x-2(.25(13x+3))=-12.5 and rearrange that by simplifying variables.

OpenStudy (anonymous):

this is confusing to me im horribe at this stuff

OpenStudy (anonymous):

there were too many equations

OpenStudy (anonymous):

it would have been alot easier to do it my way and if you have time i would recomend going back and trying it that way

OpenStudy (anonymous):

If I give you the answer, it would be too easy.

OpenStudy (anonymous):

start off easy and work your way up after a while you will just see the path to be taken before starting

OpenStudy (anonymous):

i know but what i meant was u both were tlkin at the same time so i got lost

OpenStudy (anonymous):

sorry but i started first...

OpenStudy (anonymous):

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