Answer:

Explanation:
Now we have to,
→ Simplify the given expression.
The expression is,
→ -2.3f + 0.7f - 12 - 3
Let's simplify the expression,
→ -2.3f + 0.7f - 12 - 3
→ (-2.3f + 0.7f) - 12 - 3
→ (-1.6f) + (-12 - 3)
→ -1.6f + (-15)
→ -1.6f - 15
Hence, the answer is -1.6f - 15.