Algebra-1 Problems

8.2 Substituting for a Variable


Problem #

Problem Statement

Problems Similar To

1.

Solve using substitution method.

\begin{equation}y=7x\textrm{ },\textrm{ }4x+3y=5\end{equation}

2.

Solve using substitution method.

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

3.

Solve using substitution method.

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

4.

Solve using substitution method.

\begin{equation}4x+4y=0\textrm{ },\textrm{ }6x+y=-5\end{equation}

5.

Solve using substitution method.

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

6.

Solve using substitution method.

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

7.

Solve using substitution method.

\begin{equation}-x+4y=-6\textrm{ },\textrm{ }6x-3y=5\end{equation}

8.

Solve using substitution method.

\begin{equation}6x+6y=-30\textrm{ },\textrm{ }7x-y=-10\end{equation}

9.

Solve using substitution method.

\begin{equation}7x+7y=21\textrm{ },\textrm{ }(-2)x+3y=-5\end{equation}

10.

Solve using substitution method.

\begin{equation}8x+2y=2\textrm{ },\textrm{ }-18x+90y=-63\end{equation}

11.

Solve using substitution method.

\begin{equation}14x-2y=-20\textrm{ },\textrm{ }3x-6y=-4\end{equation}

12.

Solve using substitution method.

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

13.

Solve using substitution method.

\begin{equation}y=8x+9\textrm{ },\textrm{ }y=5x-7\end{equation}

14.

Solve using substitution method.

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

15.

Solve using substitution method.

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

16.

Solve using substitution method.

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

17.

Solve using substitution method.

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

18.

Solve using substitution method.

\begin{equation}(-8)x+y=0\textrm{ },\textrm{ }4x+7y=-7\end{equation}

19.

Solve using substitution method.

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