等差数列\(\{{a}_{n}\} \)中，\({a}_{1}+{a}_{4}+{a}_{7}=39,{a}_{3}+{a}_{6}+{a}_{9}=27 \)，则数列\(\{{a}_{n}\} \)前\(9\)项的和\(S_{9}\)等

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