Respuesta :

12X-6=180

12X=186

X=186/12=15.5
Here is your answer:

First combine like terms:

5x+7x=12x

12x-1-5=180

Add 5 on both sides

180+5=185

Add 1 on both sides

185+1=186

Then divide 12x on both sides:

186÷12=15.5

Your answer is:
x=15.5