Algebra
13 Online
OpenStudy (anonymous):
9|9 - 8x| = 2x + 3
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OpenStudy (anonymous):
do you distribute the 9?
OpenStudy (anonymous):
\[9|9 - 8x| = 2x + 3\]
\[|9 - 8x| = \frac{2x + 3}{9} \]
\[9 - 8x = \pm (\frac{2x}{9} + \frac{3}{9} )\]
\[9 - 8x = \pm (\frac{2x}{9} + \frac{1}{3} )\]
hartnn (hartnn):
if you want to avoid fractions initially, you can also solve these separately,
\(-9(9-8x)=2x+3\)
and
\(9(9-8x)=2x+3\)
hartnn (hartnn):
and now yes, you distribute the 9
OpenStudy (anonymous):
78 - 10x ?
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hartnn (hartnn):
you forgot to distribute 9 to 8x ??
OpenStudy (anonymous):
......ohhh hahahaha
OpenStudy (anonymous):
now i have 78 = 78 x ....
hartnn (hartnn):
for this : 9(9−8x)=2x+3
81-72x=2x+3
78=74x
isn't it ?
OpenStudy (anonymous):
I added it wrong haha you're right you're right. So now we divide yes?
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hartnn (hartnn):
yes
OpenStudy (anonymous):
Alright got it thanks :)
hartnn (hartnn):
but we need to solve this too,similarly : −9(9−8x)=2x+3
and get other value of x
OpenStudy (anonymous):
:| lol dang it
hartnn (hartnn):
its easy :)
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OpenStudy (anonymous):
will it just be the same thing but in negative ? haha
hartnn (hartnn):
no, solve it from first step, to see the difference..... :P
OpenStudy (anonymous):
84 = -70x lol yeah its a tad different haha
hartnn (hartnn):
wouldn't that be -84 ??
OpenStudy (anonymous):
Probably.... I'm the worst at negatives
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hartnn (hartnn):
it'll be -84
so, x= -84/-70 = ... ?
OpenStudy (anonymous):
6 ovaaaa 5
OpenStudy (anonymous):
woo woo
OpenStudy (anonymous):
no wait
OpenStudy (anonymous):
3/5 ???? im confusing myself
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hartnn (hartnn):
waiting
OpenStudy (anonymous):
3/5 final answer
hartnn (hartnn):
6/5 was correct :P
OpenStudy (anonymous):
dang flabbit
hartnn (hartnn):
any doubts ?
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OpenStudy (anonymous):
and the other one wasssssss
39/37
am i right here my man am i right
hartnn (hartnn):
yes hun, correct! :D
OpenStudy (anonymous):
Yeeessssss thank you!
hartnn (hartnn):
welcome ^_^