Answer:
−9.661
Step-by-step explanation:
Let's substitute \blueD{a = 6.05}a=6.05start color #11accd, a, equals, 6, point, 05, end color #11accd and \maroonD{b = 3.611}b=3.611start color #ca337c, b, equals, 3, point, 611, end color #ca337c into the expression.
\begin{aligned} &\phantom{=} -\blueD{a}+(-\maroonD{b}) \\\\ &= -\blueD{6.05}+\left(-\maroonD{3.611}\right) \end{aligned}
=−a+(−b)
=−6.05+(−3.611)
=−6.05−3.611