Algebra-1 Problems

8.2 Substituting for a Variable


Problem #

Problem Statement

Problems Similar To

1.

Solve using substitution method.

\begin{equation}y=5x\textrm{ },\textrm{ }9x+10y=3\end{equation}

2.

Solve using substitution method.

\begin{equation}4x+y=9\textrm{ },\textrm{ }2x-3y=5\end{equation}

3.

Solve using substitution method.

\begin{equation}x=3-7y\textrm{ },\textrm{ }3x-4y=9\end{equation}

4.

Solve using substitution method.

\begin{equation}4x+8y=0\textrm{ },\textrm{ }2x+y=-9\end{equation}

5.

Solve using substitution method.

\begin{equation}-x+4y=-4\textrm{ },\textrm{ }5x+y=2\end{equation}

6.

Solve using substitution method.

\begin{equation}8x-y=-6\textrm{ },\textrm{ }5x-6y=-9\end{equation}

7.

Solve using substitution method.

\begin{equation}-x+9y=-6\textrm{ },\textrm{ }4x-8y=7\end{equation}

8.

Solve using substitution method.

\begin{equation}10x+10y=-30\textrm{ },\textrm{ }3x-y=-9\end{equation}

9.

Solve using substitution method.

\begin{equation}3x+3y=6\textrm{ },\textrm{ }(-10)x+9y=-9\end{equation}

10.

Solve using substitution method.

\begin{equation}10x+4y=9\textrm{ },\textrm{ }-24x+24y=-12\end{equation}

11.

Solve using substitution method.

\begin{equation}60x-6y=-36\textrm{ },\textrm{ }3x-2y=-5\end{equation}

12.

Solve using substitution method.

\begin{equation}y=x-9\textrm{ },\textrm{ }y=8x+5\end{equation}

13.

Solve using substitution method.

\begin{equation}y=2x+6\textrm{ },\textrm{ }y=9x-8\end{equation}

14.

Solve using substitution method.

\begin{equation}3x-y=6\textrm{ },\textrm{ }x+y=-8\end{equation}

15.

Solve using substitution method.

\begin{equation}9x+y=3\textrm{ },\textrm{ }y=x-2\end{equation}

16.

Solve using substitution method.

\begin{equation}9x+2y=0\textrm{ },\textrm{ }x+10y=-7\end{equation}

17.

Solve using substitution method.

\begin{equation}8x-10y=7\textrm{ },\textrm{ }x+6y=-2\end{equation}

18.

Solve using substitution method.

\begin{equation}(-5)x+y=0\textrm{ },\textrm{ }2x+6y=-2\end{equation}

19.

Solve using substitution method.

\begin{equation}\frac{1}{2} \times x+\frac{1}{3} \times y=4\textrm{ },\textrm{ }\frac{1}{4} \times x+y=9\end{equation}