You can just subtract them seperatly like this:
20-12=8
2/5-3/5= -1/5
Since its negative, you have to take 1 off of the final answer and put 4/5 so the answer is 7 4/5
Another way is making it a decimal
12 3/5= 12.6
20 2/5= 20.4
20.4-12.6= 7.8
7.8=7 4/5
Answer:
39. 29
36. 50
33. 7
30. 33
Step-by-step explanation:
39. According to the Order of Operations, in this case, Subtraction & Addition are evaluated after Division & Multiplication:

36. Evaluate everything since everything is wrapped in parentheses:

33. Evaluate everything inside of parentheses FIRST:

I am joyous to assist you anytime.
Answer:
0.000044
Step-by-step explanation:
d = 58h + 256
Let me know if you need me to explain this! :)