Example25 - letter to be the same or opposite. Sometimes...

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Example 4 Solve for  x  and  y Multiply the top equation by 2. Notice what happens. Now if you were to subtract the bottom equation from the top equation, the result is 0 = 1. This  statement is  never true . When this occurs, the system of equations has no solution.  In Examples 1–4, only one equation was multiplied by a number to get the numbers in front of a 
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Unformatted text preview: letter to be the same or opposite. Sometimes each equation must be multiplied by different numbers to get the numbers in front of a letter to be the same or opposite....
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This note was uploaded on 11/09/2011 for the course MATH 1310 taught by Professor Staff during the Fall '07 term at Texas State.

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