A) Subtract A and C from both sides:
B = 180-A-C
B) Divide both sides by p and t:
r = i /pt
C) Divide both sides by PIh
r^2 = V/pih
Take the square root of both sides:
r = SQRT(V/pih)
D) Subtract ax from both sides:
by = c-ax
Divide both sides by b:
y = (c-ax)/b
Pretty sure both, but I don’t see an option for both are equal to the original.
I think this video will help you https://youtu.be/auXsKxdWxlI
If it doesn’t I’m very sorry
To solve this, you must follow PEMDAS. First, solve the parenthesis. Because a negative times a positive equals a negative, the product of the fractions is -1/6. Then multiply that by 12. That equals -12/6. This can be simplified down to -2.
If you need more help, comment below and I will do my best.