# Solving Simulataneous equations

1. Nov 23, 2009

### smss_engineer

1. The problem statement, all variables and given/known data

Hi Friends.

Equations are attached as Jpeg files...

How to solve these two equations(D.17 & D.18) ?? please help me

By SMSS

2. Relevant equations

3. The attempt at a solution

#### Attached Files:

• ###### Equations.jpg
File size:
19.8 KB
Views:
62
2. Nov 23, 2009

### willem2

Solve the first one for $\eta_g$, substitute in the second equation. You get a quadratic equation.