Two soap bubble are combined isothermally to form a big bubble of radius R. If `DeltaV` is change in volume, `DeltaS` is change in surface area and `P_(0)` is atmospheric pressure then show that `3P_(0)(DeltaV)+4T(DeltaS)=0`

Explanation

To solve the problem, we need to analyze the situation of two soap bubbles combining to form a larger soap bubble. We will use the principles of thermodynamics and the properties of soap bubbles.

### Step-by-Step Solution:

1. **Understanding the System**:
- Let the two small soap bubbles have radii \( r_1 \) and \( r_2 \).
- When they combine, they form a larger soap bubble with radius \( R \).

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