Answer:
-25/12
Step-by-step explanation:
I assume you want to subtract 4/3 from -3/4 OR combine -3/4 and -4/3.
Here the LCD is (4)(3) = 12.
Then -3/4 becomes -9/12 and -4/3 becomes -16/12.
Then -9/12 - 16/12 = -25/12
