(b+1/b-1 - b/b+1): 3b+1/2b - 2 упростить)

Question

(b+1/b-1 - b/b+1): 3b+1/2b - 2
упростить)

Answer 1

(((b+1)(b+1)-b^2-b)/b^2-1) : ((6b^2-6b)/(2b-2)) = ((b^2+2b+1-b^2-b)/(b^2-1)): ((6b(b-1))/(2(b-1))) = ((b+1)/((b-1)(b+1)))*((b-1)/(3b(b-1)))= 1/(3b(b-1))