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Add: 5(0.5k−1)+2(0.4−k). Answer should be in decimal form.

1 answer

5(0.5k−1)+2(0.4−k)

= 2 - 5k + 2(0.4) - 2k

= 2 - 5k + 0.8 - 2k

= -7k + 2.8 + 2

= -7k + 4.8

In decimal form, the answer is represented as -7k + 4.8.

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