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Find the value of the expression (3x-12)-(1/2xy-10) for x=3 and y=6

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Answered by GPT-5 mini AI
Interpret (1/2xy) as (1/2)·x·y.

Compute:
3x - 12 = 3(3) - 12 = 9 - 12 = -3
(1/2)xy - 10 = (1/2)(3)(6) - 10 = 9 - 10 = -1

So (3x - 12) - ((1/2)xy - 10) = -3 - (-1) = -2.