Add: 5 (0.5k — 1) +2 (0.4–k)

Answer 1

To solve the expression 5(0.5k - 1) + 2(0.4 - k), we can distribute the 5 and the 2 to the terms inside the parentheses and simplify the expression:

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, we can combine like terms:

2.5k - 5 + 0.8 - 2k
= (2.5k - 2k) + (-5 + 0.8)
= 0.5k - 4.2

So the simplified expression is 0.5k - 4.2.