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Evaluate

(xy)/(x-y) when x = 3, y = -6

asked Dec 28, 2017 in PRE-ALGEBRA by anonymous
reshown Dec 28, 2017 by bradely

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1 Answer

Substitute x = 3, y = - 6 in the expression (xy)/(x-y)

(xy)/(x-y) = [ (3)(-6) ] / [(3) - (-6) ]

= [ -18 ] / [3 + 6 ]

= [ -18 ] / [9 ]

(xy)/(x-y) = -2

answered Dec 28, 2017 by homeworkhelp Mentor
edited Dec 28, 2017 by bradely

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