Respuesta :

-11/12 - 4/9 + 1/2 

LCD- 36 

Multiply 12 by 3, 9 by 4, 2 by 18 
Every Denominator would be 36 .. Then you multiply the Numerator with the numbers you multiplied the denominator with.. 

Fractions would be 

-33/36 - 16/36 + 18/36 =  -31/36  is what I got .