The given expression 10(9 – t).
(Apply distributive property: a(b – c) = ab – ac)
= 10 x 9 – 10 x t (Distribute 10)
= 90 – 10t (Multiply: 10 x 9 = 90 and 10 x t = 10t)
The simplified expression is 90 – 10t.
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