
Tofill : the blank with appropriate equation

Answer to Problem 1E
The first step in solving a system of equations by the method of
Explanation of Solution
Given information : The first step in solving a system of equations by the method of
Concept Involved:
Method of Elimination: To use the method of elimination to solve a system of two linear equations in
1. Obtain coefficients for x (or y) that differ only in sign by multiplying allterms of one or both equations by suitably chosen constants.
2. Add the equations to eliminate one variable.
3. Solve the equation obtained in Step 2.
4. Back-substitute the value obtained in Step 3 into either of the originalequations and solve for the other variable.
5. Check that the solution satisfies each of the original equations.
Chapter 7 Solutions
EBK PRECALCULUS W/LIMITS
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