Hey!
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We can write the expression as -2.5n - 4 + (-4.2n) + 2
~Combine Like Terms
(-2.5n + (-4.2)) + (-4 + 2)
~Simplify
-6.7n - 2
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Hence, the final answer is
![\Large\boxed{\mathsf{-6.7n~-~2}}](https://img.qammunity.org/2020/formulas/mathematics/middle-school/q3usvngrydu6824v0h2gih5s35qy537elj.png)
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Hope This Helped! Good Luck!