the given equations are,
15y = 10x - 20 ......(1)
6x - 9y = 12
9y = 6x - 12 ............(2)
3y = 2x - 4 ............. x 5
15y = 10x - 20
so, both the equations are the same, thus, the answer is x = all real values or , y = all real values,
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