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Solve the system by substitution.10x + 5y = -50 y= -x

User Karephul
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Substitute -x for y in the equation 10x + 5y =-50 to obtain the value of x.


\begin{gathered} 10x+5\cdot(-x)=-50 \\ 5x=-50 \\ x=-10 \end{gathered}

Substitute -10 for x in the equation y = -x to obtain the value of y.


\begin{gathered} y=-(-10) \\ =10 \end{gathered}

Thus, solution of system of equation is (-10,10).

User Eithed
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