Answer:
5+12
there is no equals sign in an expression so it is just that
First, do 110-30 (You'll get 90). Then, divide 90 by 2 (You'll have 45). Finally, take 45 from 350. Your final answer should be 305.
Answer: 10 1/9
Step-by-step explanation:

The two triangles are similar so you can set up a proportion remember to keep the proportional sides on the same fraction 8 goes with 5 and x with 3
Here is the proportion:
8/5 = x/3
24 = 5x - Cross multiply
24/5 = 4.8 = x - Divide both sides by 5