To simplify the expression 5(0.5k - 1) + 2(0.4 - k), we will start by distributing the coefficients:
5(0.5k - 1) + 2(0.4 - k)
= 5 * 0.5k - 5 * 1 + 2 * 0.4 - 2 * k
= 2.5k - 5 + 0.8 - 2k
Next, combine like terms by adding or subtracting coefficients of similar variables:
(2.5k - 2k) + (-5 + 0.8)
= 0.5k - 4.2
Therefore, 5(0.5k - 1) + 2(0.4 - k) simplifies to 0.5k - 4.2.
5(0.5k-1)+2(0.4-k)
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