Question

someone tell me how to answer (X+27)/5 = 2x in full?

Answer 1

multiply all by 5; -27 from each side; -10x from eaqh side; and divide it all by -9

Answer 2

if i see it right, i get 3

Answer 3

confused ^_^

Answer 4

with which step?

Answer 5

so it would be (X+27) x 5 = 2x x 5?

Answer 6

yes

Answer 7

but how could you times them each by 5? :s

Answer 8

but you forgot your denominator of 5 that cancels the 5 on top when you do that :)

Answer 9

let me demonstrate how equeations work ...

does 15 = 15?

Answer 10

yes

Answer 11

if we subtract 3 from both sides; does it still equal each other?

Answer 12

yup

Answer 13

if we divide both sides by 300; do they still equal each other?

Answer 14

yup

Answer 15

does it matter what we do to them as long as we do it to both of them in the same manner; will they always equal the same amount?

Answer 16

yeah they will always be the same, i just can't figure out how to times the (x+27) by 5 and the 2x by 5 will = 10x right?

Answer 17

2x x 5 = 10x yes;

(x+27)
------ x 5 = (x+27)
5


soo:

x+27 = 10x

Answer 18

ah right i get you

Answer 19

so then 27 = 11x?

Answer 20

now -27 and -10x and divide it all by -9 and get x=3 lol

Answer 21

how do you get to the -27 and -10x?

Answer 22

your way was good; just a little off

-x from each side to get : 27 = 9x

Answer 23

x-x+27 = 10-x

27 = 9x

Answer 24

and thats spose to be a 10x-x :) typoed meself

Answer 25

right so what i have atm is, x+27
----- = 2x
5

x+27
----- x5 = 2x x5
5
= x+27 = 10x
= x + 27 - x = 10x - x
= 27 = 9x

Answer 26

yesss, thats correct; now divide each side by 9 to get that value for x :)

Answer 27

where did you get the divide 9 from though?

Answer 28

the 9x?

Answer 29

9x has baggage ; its that 9 stuck to it by multiplication; to undo the multiplication; divide

Answer 30

9x 9
-- = -- x = 1x = x
9 9

Answer 31

so then final answer is x = 3?

Answer 32

well; with the x all alone, thats what we want

Answer 33

i think i have it :P, thanks so much for that, are you busy as i have a similar one that needs answering should just need tweeking from the previous answer (i think)

Answer 34

which is (4x+6)/ 3 = 10

Answer 35

so it would be x3 each side?

Answer 36

4x + 6 = 30, then i'm correct, 4x = 30 - 6 which = 24, and then 4x = 24 /4 each side, x = 6?

Answer 37

thats good; always dbl chk the answer by plugging it back into the original and see if it makes a true statement

Answer 38

(4(6)+6)/3 = 10

(24+6)/3 = 10

30/3 = 10

10=10