Algebra-1 Problems

8.2 Substituting for a Variable


Problem #

Problem Statement

Problems Similar To

1.

Solve using substitution method.

\begin{equation}y=10x\textrm{ },\textrm{ }7x+3y=3\end{equation}

2.

Solve using substitution method.

\begin{equation}3x+y=8\textrm{ },\textrm{ }2x-3y=6\end{equation}

3.

Solve using substitution method.

\begin{equation}x=10-7y\textrm{ },\textrm{ }3x-3y=8\end{equation}

4.

Solve using substitution method.

\begin{equation}6x+2y=0\textrm{ },\textrm{ }4x+y=-9\end{equation}

5.

Solve using substitution method.

\begin{equation}-x+2y=-4\textrm{ },\textrm{ }8x+y=10\end{equation}

6.

Solve using substitution method.

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

7.

Solve using substitution method.

\begin{equation}-x+4y=-5\textrm{ },\textrm{ }4x-9y=6\end{equation}

8.

Solve using substitution method.

\begin{equation}6x+6y=-36\textrm{ },\textrm{ }6x-y=-10\end{equation}

9.

Solve using substitution method.

\begin{equation}3x+3y=30\textrm{ },\textrm{ }(-7)x+9y=-5\end{equation}

10.

Solve using substitution method.

\begin{equation}5x+9y=5\textrm{ },\textrm{ }-18x+18y=-12\end{equation}

11.

Solve using substitution method.

\begin{equation}12x-2y=-8\textrm{ },\textrm{ }9x-8y=-7\end{equation}

12.

Solve using substitution method.

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

13.

Solve using substitution method.

\begin{equation}y=7x+7\textrm{ },\textrm{ }y=3x-8\end{equation}

14.

Solve using substitution method.

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

15.

Solve using substitution method.

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

16.

Solve using substitution method.

\begin{equation}7x+7y=0\textrm{ },\textrm{ }x+2y=-6\end{equation}

17.

Solve using substitution method.

\begin{equation}6x-9y=9\textrm{ },\textrm{ }x+3y=-7\end{equation}

18.

Solve using substitution method.

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

19.

Solve using substitution method.

\begin{equation}\frac{1}{4} \times x+\frac{1}{4} \times y=4\textrm{ },\textrm{ }\frac{1}{8} \times x+y=6\end{equation}