Answer:
Explanation:
1. add 8 to both sides to get d=25
2. subtract 12 from both sides to get v=-17
3. add 2 to get b=-9
4. subtract m to get -16-m=71 then add 15 to get -m=87 then divide both sides by - to get m by itself so m=-87
5. subtract a then subtract 29 to get -a=-105 then divide it by - to get a=105
6. add 14 to both sides to get y=12
hope this helps :)