1. а) 2/b - 1/b²=2b-1/b² НОЗ: b²
б) b+1/12b - 2a-3/24a = 2ab+2a-2ab+3b/24ab = 2a+3b/24ab НОЗ: 24ab
в) 3ab/12a⁴ - b+a/8b³= 6ab⁴-3a⁴b-3a⅝/24a⁴b³ НОЗ: 24а⁴b³
г)6b - 1-9b²/2b = 12b²-1-9b²/2b = 3b²-1/2b НОЗ:2b
2. a) 3-b/b + b/b+3 = (3-b)(3+b)+b²/b(b+3) = 9-b²+b²/b(b+3) = 9/b²/b(b+3)
НОЗ: b(b+3)
б) 5/ab-5a - b/2b-10 = 10-ab/2ab-10a
НОЗ: 2ab-10a
в) b - b²/2+b = 2b+b²-b²/2+b=2b/2+b
НОЗ:2+b