anonymous
  • anonymous
who can help explain how to solve this problem for me... 5(31/16)+3y=-11
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
ok first think you are going to want to do is clear the fraction because, well lets face it nobody likes them.
anonymous
  • anonymous
how do i do that?
anonymous
  • anonymous
to do this you are going to multiply everything by 16 so that you end up with \[31+48y=-176\] no we have a much easier number to work with

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anonymous
  • anonymous
the next step is to get your varibles on one side and constants on the other
anonymous
  • anonymous
ok
anonymous
  • anonymous
retype in the equation please
anonymous
  • anonymous
48y=-176-31?
anonymous
  • anonymous
was the first number 5 and 31/16 ?
anonymous
  • anonymous
5 times 31/15
anonymous
  • anonymous
ok thats going to change up the numbers a bit
anonymous
  • anonymous
oh ok
anonymous
  • anonymous
if you can please explain to me i have finals next week and a exam friday i want to really understand this!
anonymous
  • anonymous
but then you after you have transposed your constants and vvaribles you divide both sides by the coeficent of the varible to get your answer
anonymous
  • anonymous
im really confused now?
anonymous
  • anonymous
hello?
anonymous
  • anonymous
x=-331/48 try to simplify
anonymous
  • anonymous
how did you get that?
anonymous
  • anonymous
5(31/16)+3y=-11 => 155+48y=-176 =>48y=-176-155 => 48y=-331 => y=-331/48
anonymous
  • anonymous
ok let me see if i get it right
anonymous
  • anonymous
it didnt come out right i think i did it wrong
anonymous
  • anonymous
it said to solve using the elimination method and it gave me 2 diffrent problems
anonymous
  • anonymous
5x+3y=-11 7x-2y=19 solve using elimination method
anonymous
  • anonymous
can u help me with this?
anonymous
  • anonymous
multiply the top function by 2 and the bottom function by 3 and tell me what you get
anonymous
  • anonymous
10x+6y=-22 21x-6y=38
anonymous
  • anonymous
then i would get 31x=16
anonymous
  • anonymous
ok now you are going to combine the top and bottom function, and yes
anonymous
  • anonymous
so then i would get x= 31/16
anonymous
  • anonymous
after that i dont know what to do
anonymous
  • anonymous
it would be 16/31
anonymous
  • anonymous
sub that in for your x value inorder to get your y value
anonymous
  • anonymous
so i would do 5(31/16)+3y=-11
anonymous
  • anonymous
5 times 31/16
anonymous
  • anonymous
yea
anonymous
  • anonymous
and u said y=-331/48
anonymous
  • anonymous
and we just did that problem
anonymous
  • anonymous
and when i put it in my homework it said that was wrong
anonymous
  • anonymous
hmmm...
anonymous
  • anonymous
i put (31/16,-331/48)
anonymous
  • anonymous
as the two points
anonymous
  • anonymous
did you normally enter them in as improper fractions or mixed numbers?
anonymous
  • anonymous
it said the correct answer was (35/31,172/31)
anonymous
  • anonymous
and i dont understand how they get that answer?!
anonymous
  • anonymous
I don't either i am sorry i couldn't help
anonymous
  • anonymous
its ok thanks anyway :)

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