who can help explain how to solve this problem for me... 5(31/16)+3y=-11

- anonymous

who can help explain how to solve this problem for me... 5(31/16)+3y=-11

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- anonymous

ok first think you are going to want to do is clear the fraction because, well lets face it nobody likes them.

- anonymous

how do i do that?

- 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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## More answers

- anonymous

the next step is to get your varibles on one side and constants on the other

- anonymous

ok

- anonymous

retype in the equation please

- anonymous

48y=-176-31?

- anonymous

was the first number 5 and 31/16 ?

- anonymous

5 times 31/15

- anonymous

ok thats going to change up the numbers a bit

- anonymous

oh ok

- anonymous

if you can please explain to me i have finals next week and a exam friday i want to really understand this!

- 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

im really confused now?

- anonymous

hello?

- anonymous

x=-331/48 try to simplify

- anonymous

how did you get that?

- anonymous

5(31/16)+3y=-11 => 155+48y=-176 =>48y=-176-155 => 48y=-331
=> y=-331/48

- anonymous

ok let me see if i get it right

- anonymous

it didnt come out right i think i did it wrong

- anonymous

it said to solve using the elimination method and it gave me 2 diffrent problems

- anonymous

5x+3y=-11
7x-2y=19
solve using elimination method

- anonymous

can u help me with this?

- anonymous

multiply the top function by 2 and the bottom function by 3 and tell me what you get

- anonymous

10x+6y=-22
21x-6y=38

- anonymous

then i would get 31x=16

- anonymous

ok now you are going to combine the top and bottom function, and yes

- anonymous

so then i would get x= 31/16

- anonymous

after that i dont know what to do

- anonymous

it would be 16/31

- anonymous

sub that in for your x value inorder to get your y value

- anonymous

so i would do 5(31/16)+3y=-11

- anonymous

5 times 31/16

- anonymous

yea

- anonymous

and u said y=-331/48

- anonymous

and we just did that problem

- anonymous

and when i put it in my homework it said that was wrong

- anonymous

hmmm...

- anonymous

i put (31/16,-331/48)

- anonymous

as the two points

- anonymous

did you normally enter them in as improper fractions or mixed numbers?

- anonymous

it said the correct answer was (35/31,172/31)

- anonymous

and i dont understand how they get that answer?!

- anonymous

I don't either i am sorry i couldn't help

- anonymous

its ok thanks anyway :)

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