Chapter 1 - Foundations for Algebra - 1-5 Adding and Subtracting Real Numbers - Practice and Problem-Solving Exercises - Page 34: 45

-7.1

$-c+b-a\longrightarrow$ substitute the given value for each variable =$-5+(-4.1)-(-2)\longrightarrow$ change subtraction to addition and reverse the sign of the following term =$-5+(-4.1)+2\longrightarrow$ add, working left to right =$-9.1+2\longrightarrow$ add =$-7.1$