Mathematics
19 Online
OpenStudy (anonymous):
12 (x+4) = 3 (x+4)-9x please someone please help me who is good at explaining things. math isnt my strongest subject :((
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OpenStudy (aroub):
hey...
OpenStudy (aroub):
well firs try distributing!
OpenStudy (aroub):
first*
OpenStudy (anonymous):
so 12 times 4. and 3 times 4 ???
OpenStudy (anonymous):
is that correct.
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OpenStudy (aroub):
lets do the first one.. 12(x+4) . u multiply 12 by x and 12 by 4
OpenStudy (anonymous):
so now its 12 and 48 ???
OpenStudy (aroub):
no 12x and yes 24
OpenStudy (aroub):
48*
OpenStudy (aroub):
lol sryy
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OpenStudy (aroub):
try the next one..
OpenStudy (anonymous):
okay. so 3x and 12.
OpenStudy (anonymous):
so putting that all together now do i have. 12x+48 = 3x+12-9x
OpenStudy (anonymous):
?????
OpenStudy (anonymous):
helppp.
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OpenStudy (aroub):
okay..yes ur right!! :)
OpenStudy (aroub):
now find x do u know how?
OpenStudy (anonymous):
OH MY. yayy : )
OpenStudy (aroub):
=)
OpenStudy (anonymous):
not really
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OpenStudy (anonymous):
umm im not sure what number to choose.
OpenStudy (aroub):
ok to do it in an easier put all that has a variable on a side and all that has a numbers on a side
OpenStudy (aroub):
like this: 12x-3x+9x=-48+12
OpenStudy (aroub):
now can u add them?
OpenStudy (anonymous):
just add up all of those numbers?
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OpenStudy (aroub):
yes
OpenStudy (aroub):
try..
OpenStudy (anonymous):
oh i can do that.
OpenStudy (aroub):
ok quick,, b/c i have to go!
OpenStudy (anonymous):
-18.
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OpenStudy (anonymous):
ah i hope that is right.
OpenStudy (aroub):
yes but u have to add the x
OpenStudy (aroub):
18x.
OpenStudy (anonymous):
after this im so giving you a medal btw.
OpenStudy (anonymous):
-18 !
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OpenStudy (anonymous):
pppplllease tell me that is what x equals.
OpenStudy (aroub):
no its+18
OpenStudy (aroub):
lol u want the final answer?
OpenStudy (anonymous):
so 18x is the answer. yes?
OpenStudy (aroub):
yes
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OpenStudy (anonymous):
thank you sooooooooo much :)
OpenStudy (anonymous):
you are a great teacher !
OpenStudy (aroub):
lol im not.. but thank you! =)
OpenStudy (aroub):
wait.. we still didnt finish!
OpenStudy (aroub):
18x=-36
u divide 18 by both sides
so u get
x= -36/18
x= -2
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OpenStudy (anonymous):
i know you have to go. one LASt question where did that 36 come from.
OpenStudy (aroub):
sry yes.. -48+12 =-36 <--- this where -36 came from! :)