Explanation:
6u+5v=-2 => ×1 => 6u + 5v = -2
2u+3v=6 => ×3 => 6u + 9v = 18
___________-
-4v = -20
=> v = -20/-4 = 5
2u +3v = 6
2u +3(5)=6
2u +15 = 6
2u = -9
u = -9/2 = -4.5
so, the solutions : {(-4.5 , 5)}
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