Answer:
12
Step-by-step explanation:
distribute the 2, turning the equation into 2x+12=36
subtract 12 from both sides, now resulting in 2x=24
then divide by 2
2(x+6)=36
2x+12=36
collect like terms
2x=36-12
2x=24
divide both sides by 2
2x/2=24/2
x=12
