Solve the system by substitution. 9y = x - 4x + y = -35 Submit Answer

Jchampemont asked Jul 28, 2023

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Jchampemont asked Jul 28, 2023

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26 votes

Let:

$\begin{gathered} 9y=x\text{ (1)} \\ -4x+y=-35\text{ (2)} \end{gathered}$

Replace (1) into (2):

$\begin{gathered} -4(9y)+y=-35 \\ -36y+y=-35 \\ -35y=-35 \\ y=1 \\ \text{ Replace y into (1)} \\ x=9(1) \\ x=9 \end{gathered}$

Bea answered Aug 4, 2023

by Bea

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