SOLUTION: Use Subtraction to solve each system of equations.If the system does not have exactly one solutions, state whether it has no solution or infinitely many solutions. 2x+3y=1 & -3

Algebra ->  Equations -> SOLUTION: Use Subtraction to solve each system of equations.If the system does not have exactly one solutions, state whether it has no solution or infinitely many solutions. 2x+3y=1 & -3      Log On


   

Question 181379: Use Subtraction to solve each system of equations.If the system does not have exactly one solutions, state whether it has no solution or infinitely many solutions. 2x+3y=1 & -3x+y=15
Answer by HyperBrain(694) About Me  (Show Source):
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Using the equation -3x+y=15, we have:
y=3x+15
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Substituting this to 2x+3y=1,
2x+3(3x+15)=1
2x+(9x+45)=1
11x+45=1
11x=-44
x=-4
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Solving for y,
y=3(-4)+15=-12+15=3
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HyperBrain!
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