1/6(a+12)= -4 because i don’t understand this

a=-36

Step-by-step explanation:

1/6(a+12)=-4

1) Distribute 1/6 to a and 12:

1/6a+2=-4

2) Subtract 2 from both sides:

1/6a=-6

3) Multiply both sides by the reciprocal of 1/6: (6/1)

a=-36

Let me know if you have any confusion on how I reached the solution :)

LCM= 420
 When you list the numbers and their multiples, you keep on listing it until you get a same #.
GCF= 9
The GCF is 9. Try the birthday cake method- :0

First, put all the #s together and organized on a rectangular box. 

Then, see what goes into all of the #s. Write that # down on the left side of the "cake" (the box).
 Keep on doing it until their is no common # that goes into them both. 
 
You then add all of the #s that are on the side of the birthday cake.

*If that is the only # that goes into the #s, it is just that #.