Question

2/5=2/10+k so at this equation what does k=?

Answer 1

K + 2/10 = 2/5

K = -2/10 + 2/5

K = -2/10 + 4/10

K = 2/10

K = 1/5

Answer 2

`(2)/(5)= (2)/(10)+k` ⇒
`(2)/(5)= (2/2)/(10/2)+k`


`(2)/(5)= (1)/(5)+k` ⇒
`k= (2)/(5)- (1)/(5)`


`\boxed { k= (1)/(5) }`