방정식과 부등식 전체 문제

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}x+2y=-1 \\ 2x+3y=1\end{array}\right.$

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}2x+y=5 \\ x-2y=-15\end{array}\right.$

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}4x+y=10 \\ x-2y=-20\end{array}\right.$

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}y=-2x-1 \\ y=-\frac{1}{3}x+4\end{array}\right.$

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}y=x-6 \\ y=-\frac{3}{2}x+4\end{array}\right.$

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}y=2x-8 \\ y=\frac{3}{5}x+6\end{array}\right.$

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}y=-x-1 \\ y=x+7\end{array}\right.$

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}4x+2y=8 \\ 8x-y=1\end{array}\right.$

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}-x-12y=-1 \\ 2x-8y=-6\end{array}\right.$

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}15x+2y=6 \\ -5x+2y=-4\end{array}\right.$

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}2x-15y=7 \\ 12x+2y=-4\end{array}\right.$

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}y=3x \\ 6x-2y=0\end{array}\right.$

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}x=2y \\ 4x-8y=0\end{array}\right.$

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}2x+16y=8 \\ -x-8y=-4\end{array}\right.$

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}15x+4y=6 \\ -30x-8y=-12\end{array}\right.$

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}y=-4x \\ 4x+y=1\end{array}\right.$

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}y=-\frac{1}{4}x \\ x+4y=8\end{array}\right.$

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}y=\frac{7}{8}x+4 \\ -7x+8y=6\end{array}\right.$

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}y=-\frac{2}{3}x+5 \\ 2x+3y=11\end{array}\right.$

The sum of two numbers is 15. One number is 3 less than the other. Find the numbers.