Question 239938: solve the system of equations using the addition method
9x-5y=4
27x-15y=8
Answer by RAY100(1637)   (Show Source):
You can put this solution on YOUR website! To use the addition method we first must multiply the 1st eqn by 3
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(1) (9x -5y =4) * 3 = 27x -15y =12
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(2) 27x -15y =8
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If we subtract (1) from (2), we will get 8=12,,,which is never true
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Therefore we have no solutions
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another way to look at this is that both eqns are the same except for the y intercepts, therefore they are parallel lines,,,also with no solution
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