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Magazine Problem 179
In the following exercises, solve the system of equations. $$ \left\\{\begin{array}{l} 2 x+5 y=4 \\ 3 y-z=3 \\ 4 x+3 z=-3 \end{array}\right. $$
Problem 180
In the following exercises, solve the system of equations. $$ \left\\{\begin{array}{l} 2 y+3 z=-1 \\ 5 x+3 y=-6 \\ 7 x+z=1 \end{array}\right. $$
Problem 181
In the following exercises, solve the system of equations. $$ \left\\{\begin{array}{l} 3 x-z=-3 \\ 5 y+2 z=-6 \\ 4 x+3 y=-8 \end{array}\right. $$
Problem 182
In the following exercises, solve the system of equations. $$ \left\\{\begin{array}{l} 4 x-3 y+2 z=0 \\ -2 x+3 y-7 z=1 \\ 2 x-2 y+3 z=6 \end{array}\right. $$
Problem 183
In the following exercises, solve the system of equations. $$ \left\\{\begin{array}{l} x-2 y+2 z=1 \\ -2 x+y-z=2 \\ x-y+z=5 \end{array}\right. $$
Problem 184
In the following exercises, solve the system of equations. $$ \left\\{\begin{array}{l} 2 x+3 y+z=12 \\ x+y+z=9 \\ 3 x+4 y+2 z=20 \end{array}\right. $$
Problem 185
In the following exercises, solve the system of equations. $$ \left\\{\begin{array}{l} x+4 y+z=-8 \\ 4 x-y+3 z=9 \\ 2 x+7 y+z=0 \end{array}\right. $$
Problem 186
In the following exercises, solve the system of equations. $$ \left\\{\begin{array}{l} x+2 y+z=4 \\ x+y-2 z=3 \\ -2 x-3 y+z=-7 \end{array}\right. $$
Problem 187
In the following exercises, solve the system of equations. $$ \left\\{\begin{array}{l} x+y-2 z=3 \\ -2 x-3 y+z=-7 \\ x+2 y+z=4 \end{array}\right. $$
Problem 188
In the following exercises, solve the system of equations. $$ \left\\{\begin{array}{l} x+y-3 z=-1 \\ y-z=0 \\ -x+2 y=1 \end{array}\right. $$
