Question

CAN SOMEONE PLLZZZZ HELP!!!!!!!!!!
1. add and simplify (x/8x)+(7x-8/8x)
2. add and simplify (4/x-7)+(1/x-3)

Answer 1

the first problem you have
x 7x - 8
------ + --------
8x 8x

Answer 2

whta is the common denominator

Answer 3

8x

Answer 4

ok then you have

x + 7x - 8
----------
8x

Answer 5

ok so my answer would be

Answer 6

no you can do that

Answer 7

not do that

Answer 8

then you have
8x - 8
------
8x

Answer 9

you can take out the 8
8(x-1)
------
8x

Answer 10

now you can cancel the 8 and you have
x - 1
-----
x

Answer 11

which is the same as
1 - 1/x

Answer 12

ohhh ok wb #2

Answer 13

what would i do ther because they dont have common denominators

Answer 14

the second problem you have

4 1
----- + -------
x-7 x-3

Answer 15

What is the common denominator ??

Answer 16

x?

Answer 17

no, actually you have to take the hold thing
so the common denominator would be
(x-7)(x-3)

Answer 18

ohh

Answer 19

so now what you do is
4 (x-3) + 1 (x-7)
---------------
(x-3)(x-7)

Answer 20

ok then u would have

Answer 21

no, you need to first multiply 4(x-3) and then 1(x-7)

Answer 22

then you have
4x - 12 + x - 7
--------------
(x-3)(x-7)

Answer 23

now combine like terms

Answer 24

would that be the answer?

Answer 25

invettef365 u still there?

Answer 26

yes that is correct

Answer 27

ok ty hate to do this but i only got one more problem on my HW could u help me out with it?

Answer 28

no actually
it is
5x - 19
--------
(x-3)(x-7)

Answer 29

sure

Answer 30

ty
simplify (x+1/x^2)+(3/4x)

Answer 31

ok, you have

x + 1 3
------- + --------
x^2 4x

Answer 32

what is the common denominator??

Answer 33

(x^2)(4x)

Answer 34

actually it is 4x^2

Answer 35

:( i hate fractions

Answer 36

because you can divide as follows:

4x^2 4x^2
---- = x and ------ = 4x
4x x

Answer 37

sorry I meant

4x^2
----- = 4
x^2

Answer 38

its ok

Answer 39

then you have

4(x+1) + 3(x)
-------------
4x^2

Answer 40

do you understand how I got there?

Answer 41

yea sort of

Answer 42

since 4x^2/x^2 = 4 I multiply 4 (x+1)
and since 4x^2/4x = x I multiply 3(x)

Answer 43

ok i got it

Answer 44

know multiply 4(x+1) and 3(x) what do you get

Answer 45

4x+4+3x=7x+4

Answer 46

right then you have
7x +4
------
4x^2

Answer 47

ty so much invette

Answer 48

yw :)