Respuesta :
Answer:
17
Step-by-step explanation:
Convert the mixed numbers to improper fractions, then find the LCD and combine.
subtracting negative numbers is basically just adding positive numbers.
12 + 4 = 16
1/2 + 1/2 = 1
16 + 1 = 17
12 + 4 = 16
1/2 + 1/2 = 1
16 + 1 = 17