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OpenStudy (anonymous):
Solve y = 2x - 4 by the substitution method. 7x – 5y = 14
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OpenStudy (ganpat):
take the second equation.. get the value of y... y = (7x - 14)/ 5.. substitute in 1st equation.. and there is the answer.. 7x -14 = 10x -20 3x = 6 x= 2
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