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Mathematics 10 Online
Pixel:

http://prntscr.com/iete9t

Pixel:

@notdude

notdude:

That was faster than expected

Pixel:

qazwsxedcrfvtgbyhnujmik,ol.p;/\

Pixel:

dont mind that ^

Pixel:

i copy the print screen

notdude:

\(\large{\frac72x-\frac12y=\frac92}\) If you want to get rid of fractions you can multiply by a common denominator, in this case it is 2 \(\large\color{red}{2(}{\frac72x-\frac12y=\frac92}\color{red}{)}\\ ~\\ => ~7x-1y=9\)

Pixel:

e.e i forgot how to meth

Pixel:

I STG

Pixel:

XD

Pixel:

doesnt it cancel the denominator

notdude:

Do you want me to review on how to do this? \(\large\color{red}{2(}{\frac72x-\frac12y=\frac92}\color{red}{)}\)

Pixel:

7x-y=9?

Pixel:

deed i do it right

notdude:

Yes x'D

Pixel:

i can math

Pixel:

both y are negative

notdude:

Right so we need to multiply one of the equations by a negative to get a positive

notdude:

\(7x-y=9\) or \(3x-y=5\)

notdude:

Choose one to multiply by a negative

Pixel:

first

notdude:

\(\color{red}{-1(}7x-y=9\color{red}{)}\)

Pixel:

-7x+1=-9

Pixel:

-4x=-4

Pixel:

x=1

Pixel:

1-y=5

Pixel:

-y=4

Pixel:

y=-4

notdude:

\(\color{#0cbb34}{\text{Originally Posted by}}\) @Pixel 1-y=5 \(\color{#0cbb34}{\text{End of Quote}}\) Correction: \(3(1)-y=5\)

Pixel:

3-y=5 -y=2 y=-2

notdude:

Right, so.. \((1,-2)\)

Pixel:

100% ty notdude

notdude:

You're welcome

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