Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

  • Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Cancelling out unknown variables

Status
Not open for further replies.

EQR1

Structural
Joined
Oct 3, 2022
Messages
1
Location
CA
Is there a way to cancel out an unknown variable using 2 different equations by displaying the answer to the first equation as a function of the unknow.

See example:

Equation 1
s/n = 0.75x + 0.25y
x(120), y(200)

s/n = 140
s= 140n

Equation 2
K = (k*n)/s = (k*n)/(300n) = k/300 (and assume that k is a known variable).

The exact formulas I am trying to use are attached, but the technical guide they came from unhelpfully uses n to define three different variables (in my calculation I have input them as n, n(1) and n (2), with n being the unknown I am trying to cancel out).
 
 https://files.engineering.com/getfile.aspx?folder=a69158a5-9aa9-45df-9e60-014104205f51&file=Screenshot.PNG
Status
Not open for further replies.

Part and Inventory Search

Sponsor

Back
Top