Question

решите пожалуйста уравнение 63÷(2*x-1)=21*3

Answer 1

$\frac{63}{2 x - 1} = 63 \\ \\ 63 = 63(2x - 1) \\ \\ 1 = 2x - 1 \\ \\ - 2x = - 1 - 1 \\ \\ - 2x = - 2 \\ \\ x = 1$

Answer 2

63 : (2х - 1) = 21•3
63 : (2х - 1) = 63
2х - 1 = 63 : 63
2х - 1 = 1
2х = 1 + 1
2х = 2
Х = 2 : 2
Х = 1
—————-
Проверка
63 : (2 • 1 - 1) = 21 • 3
63 : 1 = 63
63 = 63