Hello!
This equation seems a bit complicated, so to solve it, let's break it down using the PEMDAS order of operations.
P - Parenthesis
E - Exponents
M - Multiplication
D - Division
A - Addition
S - Subtraction
If we look at the equation, we can see that there is a number in parenthesis. However, it's only a number in parenthesis, and not an operation, hence, we can not apply PEMDAS to it. Let's skip parenthesis, and since there are no exponents or multiplication operations, move on to division.
-5.1 ÷ 1.5 = -3.4
Now let's move on to addition.
-5.872 - 3.4 = 2.472
2.472 is your answer.
:)