➷ 3d + 12 = 20 + d
Subtract 12 from both sides:
3d = 8 + d
Subtract d from both sides:
2d = 8
Divide both sides by 2:
d = 4
➶ Hope This Helps You!
➶ Good Luck (:
➶ Have A Great Day ^-^
↬ ʜᴀɴɴᴀʜ ♡
