Решите уравнение 2/3 (7-2x)=1/2 срочно ответ
2/3 * 7 - 2/3 * 2х = 1/2 2/3 * 7/1 -1/2 = 2/3 * 2х/1 14/3 - 1/2 =4х/3 28/6 - 3/6 = 4х/3 25/6 = 4х/3 6 * 4х = 25 * 3 24х = 75 х = 75/24 х =3 3/24 х = 3 1/16
2/3=0.66 0.66(7-2х)=0.5 4.62-1.32х=0.5 -1.32х=0.5/4.62 -х=0.107/-1.32 -х=-0.081 Х=0.081