Solve the systems in Problems 15-26 by the substitution method. (left{begin{array}{l}2 x-3 y=15 y=frac{2}{3} x-8end{array}ight.)
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Solve the systems in Problems 15-26 by the substitution method.
\(\left\{\begin{array}{l}2 x-3 y=15 \\ y=\frac{2}{3} x-8\end{array}ight.\)
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