Question

HelloGoodnight -RECIEVE ONE MEDAL FOR HELPING- QUESTION IN POST

Answer 1

goodnight. have a nice dreamz

Answer 2

\[1/5(X-15)+1/9(X+9)=X+7\]

Answer 3

@wolf1728 I don't know how to do this . Do you think you can help me solve it.

Answer 4

I made a better graphic of the problem:

Answer 5

That becomes
1/(5x -75) + 1/(9X +81) = x + 7

Answer 6

Okay so can you tell me whats the next step

Answer 7

We could multiply both sides by (5x -75) and get
1 + (5x -75) / (9x + 81) = (x +7) * (5x -75)

Answer 8

Thats the answer or is that step 1

Answer 9

That's step 1
I'm guessing you have to solve for x right?

Answer 10

Okay and yep its solving the equation

Answer 11

What's next . Sorry I'm trying to figure out this step

Answer 12

Here's the next step

Answer 13

Okay Can you tell me if 1/13 is the answer. I think I'm doing it right but I'm not sure

Answer 14

I'm working this out as we speak - I don't have the answer yet.
I think I've found a quicker way.

Answer 15

Okay !

Answer 16

I am trying to find a way to get rid of the "1" or the (5x-75)
but something always gets left over

Answer 17

Okay let me see too

Answer 18

I have the answers but I need to know the steps on how to get them so I can understand it

Answer 19

kaun academy bro that will help u

Answer 20

I'd say the next step MIGHT be multiplying
5x^2 -40x -526 by (9x +81)
That would produce a cubic equation equaling (5x -75) which would be difficult to solve.
Something should be cancelling here.

Answer 21

Yes, How'd you get five x squared

Answer 22

That's thepart I'm kind of confused by

Answer 23

Look at the second graphic I posted

Answer 24

Okay

Answer 25

Yeah I still don't get it

Answer 26

That's about as far as I can go
I could try using Excel to get the answer (which I'm doing right now)
but it won't show you the method

Answer 27

Okay that's fine take your time.

Answer 28

@ganeshie8

Answer 29

@wolf1728 Excel is going to be a link too?

Answer 30

No Excel is just a program for doing calculations and if you know how to program it, you can set it up to do trial and error computations.

Answer 31

ohhhh ok

Answer 32

http://prntscr.com/8fokd1

Answer 33

facepalm **

Answer 34

aha what happen nnesha

Answer 35

so x-5 and x-9 are not at the denominator \[\frac{ x-5 }{ 5} +\frac{ x+9 }{ 9}=x+7\] this is your question right ?

Answer 36

Aha - that second graphic you posted is different than the other one you posted

Answer 37

leftside) find common denominator

Answer 38

Ah sorry wolf but to nnesha its 15 so x-15/5

Answer 39

ohh yea sorry 15*

Answer 40

what's the common denominator ?

Answer 41

45

Answer 42

yes right \[\frac{ 9(x-15)+5(x+9) }{ 45 }=x+7\]
multiply the numerator of 1st fraction by the denominator of 2nd fraction (9(x-15))
multiply the numerator of 2nd fraction with the denominator of 1st fraction (5(x+9)


now distribute parentheses by outside number 9(x-15) ="??
5(x+9)=???
after that combine like terms

Answer 43

9+5=14x

Answer 44

oh no no you can't add 5 and 9
first you should distribute x-15 by 9
distributive property ?
a(b+c) = a*b + a*c =ab +ac

Answer 45

9(x-15) = 9 times x + 9 times -15 = ?

Answer 46

Okay question. How come you switched I thought it was suppose to be 5(x-15)+9(x=9)

Answer 47

How come it was switched?

Answer 48

sorry *(x+9)

Answer 49

ugh i can't use draw tool >.<
well it's like cross multiplication
when we find common denominator
we should multiply the numerator of `1st` fraction by the denominator of `2nd` fraction

Answer 50

loll okay I don't 100% understand that but I am gonna go with the flow

Answer 51

9x-75+5x+40

Answer 52

How about eliminating the denominators and multiply 45 by (x + 7)

Answer 53

I thought that 45 was the denominators @wolf1728 and how did you get to this other side of the equation

Answer 54

ah sorry https://www.mathsisfun.com/numbers/common-denominator.html
here read this
i've to go i hope other users explain this better than meh XD lol good luck! :=)

Answer 55

9* (x-15) + 5*(x+9) = 45 * (x + 7)

Answer 56

nooooo stay pls help me finish the problem i get it just not that part @Nnesha