Question

решите уравнение 2/3(7-2x)=1/2

Answer 1

2/21-1/3х=1/2
-1/3х=17/42
х=-1$frac{3}{14}$

Answer 2

2/3 * (7 - 2х) = 1/2,
7 - 2х = 1/2 : 2/3,
7 - 2х = 1/2 * 3/2,
7 - 2х = 3/4,
2х = 7 - 3/4,
2х = 28/4 - 3/4,
2х = 25/4,
х = 25/4 : 2,
х = 25/4 * 1/2,
х = 3 1/8