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| PAGE: 673 | SET: Exercises | PROBLEM: 6 |
Elimination Method:
The system of equations are
(Equation 1)
(Equation 2)
Since the coefficients of the x-terms are same and also differ in sign, you can eliminate these terms by adding the equations.Add the equations to eliminate variable x.
Write equations in column form and add the corresponding columns.
The result value is 
.
Now, find the x value by substitute 
in either equation.
(Write equation 1)
(Substitute 
)
(Subtract 3 from each side)
The solution is 
.
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