-9 + 8.3 = -5.22 how do i show my work ??

the answer is really -0.7

Step-by-step explanation:

 -9.0 + 8.3

-9.0

+8.3

0-3 is 7 because you have to take away the zero and replace it with ten

you borrowed that ten from the 9 so the nine is now a negative eight.

now you subract and it becomes a zero. the answer's sign is that of the bigger number so, we would take the negative sign from the nine since it is bigger than eight. so the answer is -0.7.

is only a line? i think so