# Chapter 7 - Section 7.7 - Complex Numbers - 7.7 Exercises - Page 491: 39

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#### Work Step by Step

We are given the expression $(-3-4i)-(-1-4i)$. First, we must use the distributive property to simplify the right term. $(-3-4i)-(-1-4i)=-3-4i+1+4i$ Next, we can group like terms and simplify. $(-3+1)+(-4+4)i=-2+0i=-2$

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