Math
posted by
Stuart on
.
12  9 = 15d + 9? please help with operations

Math 
Ms. Sue,
Please do not keep posting the same problem over and over. You try to do this one, and I'll check your work in an hour.

Math 
Anonymous,
129=15d+9
3=15d+9
39=15d
6=15d
15d= 6
3*5*d= 3*2 Divide with 3
5d= 2 Divide with 5
d= 2/5= 0.4