3 ( 4d + 1 ) - 9d = 6 - 2d
3(4d+1)-9d=6-2d12d+3-9d=6-2d3d+3=6-2d5d=3 /:5d=3/5
Answer:
d=3/5
Step-by-step explanation:
12d + 3 - 9d = 6 - 2d
12d - 9d + 2d = 6 - 3
5d = 3
d = 3/5
d = 0.6