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Module 6
Solving systems of linear equations by addition
Question | Answer |
---|---|
Solve the system of equations by addition method. 5x+2y=-13 3x-2y=5 | The solution is (-1,-4) |
Solve the system of equations by addition method. -4x+y=1 12x-3y=-3 | The solution is there are infinite number of solutions. |
Solve the system of equations by addition method. 2x=-5y+9 8x+9y=25 | The solution is (2,1) |
Solve the system of equations by addition method. 15/7x+5y=-5 3x+7y=-7 | The solution is there are infinite number of solutions. |
x+y+z=6 3x-y-z=22 2x-2y-3z=41 | There is one solution. The solution is (7,24,-25) |
4x+8y+z=7 -x+2y+4z=6 x+2y+3z=-1 | The solution is (-4,3,1) |
Solve the system by either the addition method or the substitution method. y=2x-5 y=4x-19 | The solution is (7,9) |