Verified answer

Пошаговое объяснение:

а)

4,6/(х + 4,4) = 8,4/(3х + 5,1)

4,6(3х + 5,1) = 8,4(х + 4,4)

13,8х + 23,46 = 8,4х + 36,96

13,8х - 8,4х = 36,96 - 23,46

5,4х = 13,5

х = 13,5 : 5,4

х = 2,5

б)

2 2/3/(х + 1/3) = 1 1/2/(х - 1 1/8)

2 2/3(х - 1 1/8) = 1 1/2(х + 1/3)

8/3(х - 9/8) = 3/2(х + 1/3)

8/3х - 72/24 = 3/2х + 3/6

8/3х - 3 = 3/2х + 1/2

8/3х - 3/2х = 1/2 + 3

16/6х - 9/6х = 3 1/2

7/6х = 7/2

х = 7/2 : 7/6

х = 7/2 * 6/7

х = 1/1 * 3/1

х = 3/1

х = 3