B is the answer to your question I remember putting that in my other class
For this case we have the following expression:

Rewriting the expression we have:
1) First we subtract the numbers within the parenthesis:

2) Then, we solve the exponents:

3) Then, multiplication:

4) Finally, the addition of numbers is made:

Answer:
the value of the expression is:
B: 29
Answer:
1/4 of 10 is 2 1/2
then 7 1/2 is left
X=20
180=7x+x+20
-20. -20
180=7x+x
180=8x
divide by 8
x=20