Examples
[2141]+[−3−3−5−3]
Step 1
Add the corresponding elements.
[2−31−34−51−3]
Step 2
Step 2.1
Subtract 3 from 2.
[−11−34−51−3]
Step 2.2
Subtract 3 from 1.
[−1−24−51−3]
Step 2.3
Subtract 5 from 4.
[−1−2−11−3]
Step 2.4
Subtract 3 from 1.
[−1−2−1−2]
[−1−2−1−2]