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Question

# Solve the linear system using substitution.$\left. \begin{array} { l } { x - 9 = 0.5 y } \\ { 2.2 x - 3.1 y = - 0.2 } \end{array} \right.$

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We need to solve the following system using substitution:

\left\{\begin{aligned}x-9&=0.5y\\2.2x-3.1y&=-0.2\end{aligned}\right.

To solve a system using the substitution method, solve one of the equations for a variable and then substitute it into the other equation to write a new equation. Solve the new equation and then substitute the value you found into one of the original equations to solve for the other variable.

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