I'll give you a hint. <u><em>You had to used pemdas stands for: p-parenthesis, e-exponents, m-multiply, d-divide, a-add, and s-subtracting.</em></u>
First you had to calculate with parenthesis first.

Then you add and subtract from left to right.

Final answer 
Hope this helps!
And thank you for posting your question at here on brainly, and have a great day.
-Charlie
can I have brainliest if I answer
Answer:
50
Step-by-step explanation:
180-105=75
180-(75+55)=50
Answer:
Y = 59.0°
Step-by-step explanation:
Using the cosine rule in terms of x, y and z
cosY = 
with x = 22, y = 20 and z = 18
cosY = 
= 
=
, thus
Y =
(
) ≈ 59.0° ( to the nearest tenth )
Answer: ITS A! I HAVE THE SAME TEST!
Step-by-step explanation: