Question

6 (3-x) = -4 (2x-1) Find x Value The X Value is 7 or -7 just can't figure out how to get the answer

Answer 1

And I got alot more of this crap and my teacher didn't tell me how to do them

Answer 2

6(3- x) = -4(2x - 1)
the first thing you want to do is distribute the 6 and the -4 through the parenthesis. Can you do that ?

Answer 3

I know what distribute means but don't know how to do it exactly

Answer 4

6(3 - x) = 6 * 3 - 6 * x
and -4(2x - 1) = -4 * 2x - (-4) * 1
understand ?

Answer 5

let me restate that second one....-4 * 2x + -4 * -1

Answer 6

soo 12x = 13x?

Answer 7

6(3 - x) = -4(2x - 1)
18 - 6x = -8x + 4
can you take it from here because I have to go...sorry

Answer 8

18 - 6x = -8x + 4
subtract 18 from both sides
-6x = -8x + 4 - 18
-6x = -8x - 14
now add 8x to both sides
-6x + 8x = -14
2x = -14
x = -7

sorry I couldn't explain better, I have to go now

Answer 9

-6x - 90 = 9x

Answer 10

Tho I am so lost with all this stuff

Answer 11

subtract 9x on both sides and add 90 on both sides
You'd get -15x=90
now divide by -15

Answer 12

The point is that you bring the variables (x in this case) to the left side of the equation, and the numbers to the right side.

Answer 13

-6 is the answer?

Answer 14

\(\large\dfrac{~~90}{-15}=-6\) so yea

Answer 15

so whats about 3x - 4 = 10-4x How would i do this one

Answer 16

bring numbers to the right, x to the left.
To bring x to the left, you would have to add 4x on both side.
That way, you can cancel the -4x on the right.

\(\large3x - 4 = 10-4x\)
\(\large3x~\underline{+4x} - 4 = 10-4x~\underline{+4x}\)
\(\large7x - 4 = 10\)

Answer 17

Now you only have to bring -4 to the right
Just add 4 on both sides and you'll cancel the -4 on the left.

So it'll become: 7x=14

now you divide 14 by 7 to solve for x

Answer 18

x=2

Answer 19

exactly :)

Answer 20

can we do 2 more?

Answer 21

sure

Answer 22

-7 - (-4x) = -4x+9

Answer 23

oops 2 more after this 1 my bad

Answer 24

Alright first of all: -(-4x) is the same as +4x

Answer 25

So the equation would be -7 +4x = -4x+9

Answer 26

now we want that -7 on the other side of the equation, so we add 7 on both sides

4x=-4x+16

Answer 27

last thing is to add 4x on both sides to get that -4x to the left

8x=16

Do you know what to do now?

Answer 28

Divide both sides by 8?

Answer 29

Yep :)

Answer 30

x=2

Answer 31

correct