I'm trying to solve this:
-1 = n * 1,6 * 10⁻¹⁹
This is my calculation:
1/n = 1.6*10⁻¹⁹ +1
n= 1/ 2.6*10⁻¹⁹
n= 1* 10¹⁹ / 2.6
n= 0.4 *10¹⁹
n= 4*10¹⁸
Where I'm wrong?
-1 = n * 1,6 * 10⁻¹⁹
This is my calculation:
1/n = 1.6*10⁻¹⁹ +1
n= 1/ 2.6*10⁻¹⁹
n= 1* 10¹⁹ / 2.6
n= 0.4 *10¹⁹
n= 4*10¹⁸
Where I'm wrong?
-
try this:
-1/(1.6*10^(-19)) = n
No need to bring the n to the left, just divide both sides by everything on the side with the n. You can always write it the other way around when you're done. (n = -1/(1.6*10^(-19)) is the same thing).
Also, be careful...if you add one to both sides, you have 0 = n * 1,6 * 10⁻¹⁹ + 1. You can't just add one to your number because you don't have 1.6, you have .00000000000000000016n (the long form of n * 1,6 * 10⁻¹⁹). That, and 1 are not like terms (it's not 1n, in which case adding 1n makes it 1..00000000000000000016n).
Then, when you divided both sides by n, you actually would have had 0/n = (n * 1,6 * 10⁻¹⁹)/n + 1/n. So just be careful how you manipulate the sides...take your time, do lots of practice problems :-)
-1/(1.6*10^(-19)) = n
No need to bring the n to the left, just divide both sides by everything on the side with the n. You can always write it the other way around when you're done. (n = -1/(1.6*10^(-19)) is the same thing).
Also, be careful...if you add one to both sides, you have 0 = n * 1,6 * 10⁻¹⁹ + 1. You can't just add one to your number because you don't have 1.6, you have .00000000000000000016n (the long form of n * 1,6 * 10⁻¹⁹). That, and 1 are not like terms (it's not 1n, in which case adding 1n makes it 1..00000000000000000016n).
Then, when you divided both sides by n, you actually would have had 0/n = (n * 1,6 * 10⁻¹⁹)/n + 1/n. So just be careful how you manipulate the sides...take your time, do lots of practice problems :-)