Question

Im not sure what the solution is-

Answer 1

First, I’m going to suggest changing -1 and 1/2 to -1.5 (the equivalent in decimal form).
Now the equation should look like:
-2.1-?=-1.5
From here you treat ? as a variable (like x) and solve to isolate it by adding 2.1 to the other side (-1.5).
-?=-1.5+2.1
-?=0.6
Now you need to flip the negative sign in front of ? so you move it to the other side and get:
?=-0.6

Answer 2

Answer: it’s -0,6 which is C

Step-by-step explanation: