So :

?
First, you want to bring everything together on the top of the fraction.
12=24/2 so you can have

Add like terms -- 12 +24 = 36

Now we are at

Which is the lowest possible simplified version while remaining at exact value.
Feel free to check my math! I kinda did this off the top of my head.
Answer:
B
Step-by-step explanation:
Rotating 120
Answer:
b=4.5
Step-by-step explanation:
4b+4=22
4b=22-4
4b=18
b=4.5
Leslie did. If you multiply 4/5 by two, you get 8/10. 8/10 is greater than 7/10.
You can sort them on the shapes that are the same or different