Solve, using cross-multiplication :
4x + 3y = 17
3x - 4y + 6 = 0
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Solution of equations 15x + 6y = 27 and 6x + 15y = 36 is :
x = 1, y = -2
x = -1, y = 2
x = 1, y = 2
x = -1, y = -2
3x + 4y = 11
2x + 3y = 8
6x + 7y - 11 = 0
5x + 2y = 13