Question

РЕШИТЬ УРАВНЕНИЕ пж помогите

Answer 1

(2/3x - 4/5) * 15 = 8 = 10x - 12 = 8 = 10x = 8 + 12 = 10x = 20 =    x = 2

(5/7 - 2/3y) * 21 = 1 = 15 - 14y = 1 = -14y = 1 - 15 = -14y = - 14 =    y = 1

2/3x + 7/3x = 18 = 2x + 7x = 54 = 9x = 54 =    x=6

7/12m + 2/3m - 1/4m = 7 = 7m + 8m -3m = 84 =  m = 7

:3