Question

HELP ME
Solve 4(2x − 1) − 3 = 9(x − 4).

−29
32
13
29

Answer 1

distribute 4(2x − 1) and 9(x − 4). first

Answer 2

okay 6x-4*1???? and 9x*9*4

Answer 3

i meant - in the middle of the second one

Answer 4

o-o distribute means to multiply
what is 4 times 2x and what is 4 x 1 ?

Answer 5

8x and 4

Answer 6

and 4 times 1

similarly what is 9 times x and 9 x 4
9(x − 4)

Answer 7

ack ignore first sentence...

Answer 8

lol 9x and 36

Answer 9

4(2x − 1) − 3 = 9(x − 4).
8x-4-3=9x-36

Answer 10

so we need to clean this up a bit ... what is -4-3?

Answer 11

-7

Answer 12

yay
8x-4-3=9x-36

8x-7=9x-36

now I need to have all x's to the left... what do we need to do next?

Answer 13

add 36??

Answer 14

umm yeah but we're not there yet...
let's have all x's to the left first .

Answer 15

which terms have x in them?

Answer 16

8x-7=9x-36

Answer 17

8x and 9x

Answer 18

yes... and we need all variables (that is the letters) to the left
since 8x is already on the left... what do we need to do to have 9x on the left?

Answer 19

add?

Answer 20

ummm no we need to get rid of the 9x on the right
so we do what to both sides?

Answer 21

divviidddee?? No, subtracct.. No, divide.

Answer 22

we don't do division...we do subtraction

Answer 23

so we subtract 9x on both sides
8x-7-9x=9x-9x-36

the 9x on the right should go to 0
then we rewrite this

Answer 24

8x-9x-7=-36

Answer 25

what is 8x-9x ?

Answer 26

-1x

Answer 27

@Marianakay456
On the right side you have 9x - 36
Think of it as
+ 9x - 36
The 9x is being added to the right side, the 36 is being subtracted from the right side.
Since you want to get rid of the +9x from the right side, you subtract 9x from both sides.

Answer 28

yeah
-x-7=-36
now I need all numbers to go on the right... what do we need to do to the 7?

Answer 29

add?

Answer 30

yes we add 7 to both sides
-x-7+7=-36+7
-x = -36+7

Answer 31

what is -36+7 ?

Answer 32

-29

Answer 33

-x = -29

yes... there is one more step though....what is it?

Answer 34

do we make it positive? lol idk

Answer 35

yeah we make it positive by dividing ???????? because I want x = ? to be my final answer

Answer 36

-29?

Answer 37

so the answer is +29 or just 29

Answer 38

-x = -29

how to make this positive.... we use division .. divide by ??? to have x = ?

Answer 39

is D correct? 29 or +29?

Answer 40

-x means -1 * x
divide both sides by ...

Answer 41

-1

Answer 42

please understand the last step before choosing the answer

-x=-29
there is a step missing.

Answer 43

division is required... divide ____________ on both sides

Answer 44

we need to divide by -1

Answer 45

yes on both sides

Answer 46

OKK. we end up with DUNDUNDUN my answer, D

Answer 47

yeah

Answer 48

thanks