Example 4 - and substitute into either equation (2) or (3)...

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Example 2 Solve this system of equations using the elimination method. Write all equations in standard form. Notice that equation (1) already has the  y  eliminated. Therefore, use equations (2) and (3) to  eliminate  y . Then use this result, together with equation (1), to solve for  x  and  z . Use these results 
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Unformatted text preview: and substitute into either equation (2) or (3) to find y . Substitute z = 3 into equation (1). Substitute x = 4 and z = 3 into equation (2). Use the original equations to check the solution (the check is left to you). The solution is x = 4, y = 2, z = 3....
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Example 4 - and substitute into either equation (2) or (3)...

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