Find the solution of the pair of equations `(x)/(10) + (y)/(5) - 1 = 0` and `(x)/(8) + (y)/(6) = 15` and find `lambda`, if `y = lambda x + 5`.

Explanation

To solve the pair of equations and find the value of \( \lambda \), we will follow these steps:

### Step 1: Write the equations in standard form
The given equations are:
1. \( \frac{x}{10} + \frac{y}{5} - 1 = 0 \)
2. \( \frac{x}{8} + \frac{y}{6} = 15 \)

We can rewrite these equations in standard form.
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