3x-y = 11
x+y = 5
Add both equations together:
4x = 16
Divide both sides by 4 to find the value of x:
x = 4
Substitute the value of x into the original equations to find the value of y:
Therefore: x = 4 and y = 1
x = 4 and y = 0
You need three independent equations to solve for three unknown variables.
You can't solve it - you only have one equation and two unknowns. You need 2 equations to solve this.
x = -1.2, y = -3
The answer is that it cannot be done. To solve a set of equations in k variables (in this case, 2) you need at least two independent equations.
x = 4 and y = 0
You need three independent equations to solve for three unknown variables.
You can't solve it - you only have one equation and two unknowns. You need 2 equations to solve this.
a=5: c=4
x = -1.2, y = -3
Solve this system of equations. 5x+3y+z=-29 x-3y+2z=23 14x-2y+3z=-18 Write the solution as an ordered triple.
the answer
The answer is that it cannot be done. To solve a set of equations in k variables (in this case, 2) you need at least two independent equations.
To solve for two unknowns (x and y) it is necessary to have two independent equations.
To solve for 2 unknown variables you need 2 independent equations. You have only 1.
You cannot solve one equation in three unknowns. You need three independent equations.
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