Your mistake is here :
If you take 4A from both sides, it's :then take 4A from both sides to get -2A/3=8
But to substract two elements, they gotta have the same denominator. So write 4A=12A/3 and then do the substraction.
my problem is to figure out what A is alone but my answer doesnt match the book, i know its either A=12/5 or A=-2.4 but my answer doesnt come close.
first i tried it 2A/3=8+4A then take 4A from both sides to get -2A/3=8, times by 3 to get rid of it. -2A=24, then devide by -2, A= -12.
It would be a really big help if you could explain alittle step by step, i havent done this type of math for a awhile and trying to get a jump on it again so.. kind tell me in the most simple way please
What you did :
Remember the rules of operations (pemdos or bodmas), the division comes before the substraction !
What you did here is first substract 4A to 2A and then divide by 3. This is false.
2A/3 - 4A = 8
Multiply both sides by 3 in order to get rid of the division.
--> 2A - 12A=24
and now you can solve