Waitrud Weber’s blog

things and reminders for memories

formula 3000

so, we forcus on the bold below formula.

1/(a+b)  = c/a + d/b

 

c*b/a*b + a*d/a*b = ( c*b + a*d ) / a*b

 

c*b + a*d  = C

a+b=C*a*b

 

a + b = (c*b + a*d)*a* b

the above looks also interesting. 

abc = 1 ...(1)

abd = 1 ...(2)

 

we could replace,

bc =  1/a

bd = 1/a