0
Anonymous
x = 45 x 100/19 = 236.84
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X=45
The equation is xy = 5*9 = 45 Alternatively, y = 45/x
0.02
x=-6
x + 2y = 27 2x - y = 19 y = 2x - 19 x + 2(2x - 19) = 27 x + 4x - 38 = 27 5x = 65 x = 13 y = 2(13) - 19 y = 7