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OpenStudy (anonymous):
Solve the system by substitution. x - 3y = 4 2x - 6y = 8 A. no solution B. x = 4, y = 0 C. x = 0, y = 0 D. infinite solutions
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OpenStudy (anonymous):
express x from 1º eqcuation: x=3y+4 put this value in 2º equation: 2(3y+4)-6y=8 rearange: 6y+8 -6y = 8 since the equations are proportonal, infinitly many solutions
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