Posted by
Anonymous on
.
3a+3012=75 how do you do this

geometry 
aj,
3a+3012=75
you combine 3012 and get:
3a+18=75
then you subtract 18 from both sides:
3a18=7518
and get:
3a=57
then divide both sides by 3
3a/3=57/3
a=19
So 'a' equals 19

geometry 
drwls,
The previous answer is correct, but this subject is NOT geometry.