Solve, using cross-multiplication :
4x - 3y = 0
2x + 3y = 18
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x - y + 2 = 0
7x + 9y = 130
4x - y = 5
5y - 4x = 7
8x + 5y = 9
3x + 2y = 4
4x - 3y - 11 = 0
6x + 7y - 5 = 0