Question 759643
4x + 5y =6 
15y + 18 - 12x 
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Rearrange:
4x + 5y = 6
12x+15y = -18
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Modify to get:
12x + 15y = 18
12x + 15y = -18
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Those two equations are a contradiction.
Ans: No solution
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Cheers,
Stan H.