Question

If 3x = 0, why cant we take x to the other side,
then, 3=0, which is not true?
WHats wrong in this????????

Answer 1

If three x is zero.. then that means what ever X is is zero because something times zero is always zero.

Answer 2

how are you planning to take x on the other side ?
multiplying, dividing ?

Answer 3

3 is still three :)

Answer 4

If you were to take it to the other side.. it would have to be divided.

Answer 5

by dividing

Answer 6

you know you cannot divide by a 0 ?
thats illegal...

Answer 7

3x = 0
since 3 is not a 0, x=0
and so, you cannot divide by 0.

Answer 8

i am not dividing by 0. i m dividing by x

Answer 9

but x here is actualy =0

Answer 10

yeah... i noe but there is nothing wrong in these steps

Answer 11

but the result is wrong!

Answer 12

u cant divide by x,
without having full knowledge of wat values it can take

Answer 13

Haha that's impossible if you think about it mathematically..
if i have three 'nothings' and i were to give 3 people 1 each- everyone would have nothing...

Answer 14

remember x is a variable, it can take any value

Answer 15

for 3x = 5xy, we dont know the value of x but still we can divide by x and write it as 3 = 5y or 7x = 5y can be written as 7 = 5y/x

Answer 16

not actually, even thats incomplete

Answer 17

whenever u divide by x, put an explicit caveat saying x \(\ne\) 0

Answer 18

3x = 5xy
3x-5xy =0
x (3-5y) = 0
x=0 or 3-5y =0
this is correct way

Answer 19

so, when 3-5y =0
then x is NOT = 0!!

Answer 20

notice the "or" in between
either of it can be true

Answer 21

7x = 5y
y = 5y/x <----incomplete

y=5y/x \(x \ne 0\)<---complete

Answer 22

OMG its so complicated

Answer 23

but logical, since we cannot divide by 0, we need to mention :)

Answer 24

let it just be like 3 is a constant therefore it cant be equal to 0

Answer 25

thats what we said.

Answer 26

yeah... :)