I don't understand the question, but I did get this:

Hope this helps!!
10x+25 (expressions don't have equal signs)
We have to mutiply factor -2/3 times every agument from the parenthesis.

/+8b
8+6b=-4 /-8
6b=-12 /:6
b=-2 - its the answer
Answer:
a. 3.5 b. 2.25 c. 47.8 deg
Step-by-step explanation: