Substitute the values: \(S_5 = \frac{5}{2}(2 \times 3 + 4 \times 2)\).
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- #### \(x = 43/14\), \(y = 23/7\)
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- Simplify: \(S_5 = \frac{5}{2}(6 + 8) = \frac{5}{2} \times 14 = 35\).
- #### \(S_5 = 35\)
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