\( \left.\begin{array}{r}\left.\text { 1. } \begin{array}{c}2 x+3 y=8 \\ x+2 y=5\end{array}\right\} \\ 2 a-b=7 \\ 2 a+3 b=-1\end{array}\right\} \)
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Oh, solving those systems of equations can feel like a puzzle! Let’s break it down. In the first set, you have two linear equations with two variables. You can use substitution or elimination methods to find the values of \( x \) and \( y \). As for the second set of equations, you can solve for \( a \) and \( b \) just like before! Rearranging either equation can help. Remember, checking your solutions by plugging them back into the original equations is a smart move to catch any pesky mistakes! Happy solving!