Answer: 
Step-by-step explanation:

Distribute the negative sign. This basically changes all the signs inside the parentheses.

Combine like terms;

Add every side up and then subtract it by 180
Answer:
2
Step-by-step explanation:
2x2=4
Answer:
b = 1/2
Step-by-step explanation:
6x + 2 = 5
6x = 3
x = 1/2