20.3 - 8.4365 I need the answer its for a test

How to use order of operation in 20 divide by 4 multiply 5 = 1

How is the equation of this circle written in standard form? x2 + y2 - 6x + 14y = 142 a) (x - 3)2 + (y + 7)2 = 200 b) (x+ 3)2 + (y - 7)2 = 200 (x - 6)2 + (y + 14)2 = 142 d) (x+6)2 + (y- 14)2 = 142

(60 points) explain this in detail