Solve using substitution. \[ \begin{array}{l}x=-3 \\ 7 x+2 y=-17\end{array} \]
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To solve using substitution, we start with the first equation \( x = -3 \). We can substitute this value into the second equation \( 7x + 2y = -17 \). Substituting \( x = -3 \) into the second equation: \[ 7(-3) + 2y = -17 \] This simplifies to: \[ -21 + 2y = -17 \] Now, to isolate \( 2y \), we add 21 to both sides: \[ 2y = -17 + 21 \] \[ 2y = 4 \] Next, we divide both sides by 2 to solve for \( y \): \[ y = 2 \] So the solution to the system of equations is \( x = -3 \) and \( y = 2 \). Thus, the solution in ordered pair form is \( (-3, 2) \).
