93-87-18: 6+45-9.5=3

This problem appears to be malformed or incomplete, as it presents a series of operations without a clear structure or a single equation to solve. The presence of an equals sign followed by '3' suggests an attempt at an equation, but the preceding numbers and operations do not form a standard mathematical expression that can be definitively evaluated to '3'.

If this is intended to be a sequence of independent calculations, each would need to be presented separately. For example:

1. 93 - 87 - 18 = ?

2. 18 : 6 = ?

3. 6 + 45 = ?

4. 45 - 9.5 = ?

Without further clarification on how these numbers and operators are meant to be combined, a precise answer cannot be provided.