To solve this equation, we will first distribute the 1/9 to the terms inside the parentheses:

2,136 : 1/9 - x = 7,12

Now we can simplify by multiplying both sides by 9 to get rid of the fraction:

2,136 9 = 7 9,12 + 9x

19,224 = 63,108 + 9x

Next, subtract 63,108 from both sides:

19,224 - 63,108 = 9x

-43,884 = 9x

Finally, divide by 9 to solve for x:

x = -4,876

Therefore, the solution to the equation is x = -4,876.