how to do this how could i do it
![How To Do This How Could I Do It class=](https://ph-static.z-dn.net/files/d09/02e0d107589329e2f38a292df42c8095.jpg)
Answer:
+3 -6 +13 -4
-3 +7 +9
+4 +16
+20
Step-by-step explanation:
here i hope it can help you