Answer:
the answer is x = 4
Explanation:
first you wanna subtract 8 from both sides
then it should look like this...
then this... 2x+12=20
next you need to subtract 12 from both sides
then it'll look like this 2x=8
then this...
lastly your gonna simplify it and and your answer will be...
x = 4
hope this helps :)