Evaluate:
(a) L2.6+L3.1˩˩ -L1.8–L-4.3˩˩
(b) Г2.5+ Г-3.7ꓶ ꓶ + Г Г4.3ꓶ +Г-1.8ꓶ ꓶ
(c)Г ꓡ1.7˩-Г–2.6ꓶꓶ+Гꓡ-3.5˩- ꓡ-4.3˩˩

Let's break down each part of the problem step by step, recognizing that \(L\), \( \Gamma \) (Г), and \( \Lambda \) (ꓶ) represent some unknown operators or mathematical functions. Given this notation, I'll assume plausible interpretations for these symbols and continue solving as follows:

### (a) \(L(2.6) + L(3.1)^{\llcorner} - L(1.8) - L(-4.3)^{\llcorner}\)

If we assume \(L(x)\) represents a simple linear function and the superscript \(\llcorner\) means some operation (such as applying absolute values), the expression could be evaluated in the following way:

1. **Evaluate \(L(x)\)** for each term.
   - \( L(2.6) \)
   - \( L(3.1) \llcorner \)
   - \( L(1.8) \)
   - \( L(-4.3) \llcorner \)

If further clarification on the operations involved is provided, I can offer a complete solution.

Do you need more details or want to clarify the operations for precise evaluation? 
Meanwhile, consider these questions:
1. How would you represent unknown functions in general?
2. How are piecewise functions commonly represented?
3. What are typical properties of linear functions?
4. How is absolute value applied in operations?
5. How are nested functions evaluated?

Tip: Always define symbols or operations clearly when using non-standard notation in math.

(a) L2.6 + L3.1˩˩ - L1.8 - L-4.3˩˩ (b) Г2.5 + Г-3.7ꓶ ꓶ + Г Г4.3ꓶ + Г-1.8ꓶ ꓶ (c) Г ꓡ1.7˩ - Г–2.6ꓶꓶ + Гꓡ-3.5˩ - ꓡ-4.3˩˩

Explore how to solve complex mathematical expressions involving linear functions, piecewise functions, and nested operations with absolute values. This detailed breakdown will help students understand how to evaluate these expressions step-by-step. Suitable for Grades 10-12.

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