7/9x+4=2/3X+8

Решение:

1/2x+1/6x=x-3

Решение:

7/9 х - 2/3 х = 8 - 4 1/2 х + 1/6 х - х = - 3

7/9 х - 6/9 х = 4 3/6 х + 1/6 х - х = - 3

1/9 х = 4 4/6 х - х = - 3

х = 4 : 1/9 = 4 * 9/1 - 2/6 х = - 3

х = 36 х = - 3 : ( - 2/6) = - 3 * (-6/2)

х = 36 х = 18/2 = 9