Question

Please do not answer directly, I just need help working the problem.

(2x - 4 / 10) = (2x / 10)
solve for x.

First step?

Answer 1

so is the question

1.

\[\frac{2x - 4}{10} = \frac{2x}{10}\]

or 2.

\[2x - \frac{4}{10} = \frac{2x}{10}\]

Answer 2

1.

Answer 3

The problem as presented has no solution. Are you sure it's correct?

Answer 4

ok... the 1st step for these type of questions is to cross multiply to remove the denominators

10(2x - 4) = 10(2x)

then distribute
and then solve

but the equation has no solution...

Answer 5

Oops I apologize here is the correct equation
2x - 4 / 10 = 2x / 20
Again sorry about that

Answer 6

Find the lowest common denominator and multiply both sides by that number.

Answer 7

ok... so still cross multiply

20(2x -4) = 10(2x)

Answer 8

How do I multiply if there's a variable?

Answer 9

well you multiply each term inside the brackets by the term outside

\[20 \times 2x - 20 \times 4 = 10 \times 2x\]

Answer 10

40x - 80 = 20x?

Answer 11

yep.

Answer 12

I got 0.4 = x. Is that correct?

Answer 13

replace x by .4 in the original equation if you get both equal sides then your answer 1000% right
check!

Answer 14

Yes it is correct thx everyone

Answer 15

is that point 4(.4) or just 4 ?

Answer 16

.4

Answer 17

how did you get that ??

Answer 18

It was a long process... Did I do something wrong? Or should I explain?

Answer 19

yes .4 is not a right answer
explain plx
if you show ur work ... that would be better :-)

Answer 20

40x - 80 = 20x
Starting from here i add 80 to both sides to get rid of 80 on one side
40x - 80 + 80 = 20x + 80
40x = 100x
Divide both sides by 100?
I think this might be where I'm doing something wrong...

Answer 21

nice first step is right add 80 both side
then at right side you got 20x +80
now here these are not like terms ...
20 have x but 80 does not have any variable so you can't combine them

Answer 22

So I have 40x and 20x + 80
Subtract 20x from both sides?

Answer 23

yep right

Answer 24

20x = 80
divide both sides by 20?

Answer 25

yep

Answer 26

Ah, 4. Thanks for that! I'll apply this to some others I'm having problems with.

Answer 27

np :-)