Question

1) 5*( 2X+1 ) = 3*( 2-X )

Answer 1

5(2х+1)=3(2-х)
Раскрываем скобки:
10х+5=6-3х
7х=1
х=1/7

Answer 2

Не

Answer 3

Решаем:
1) 5*(2x+1)=3*(2-x)
10x+5=6-3x
10x+3x=6-5
13x=1
x=1/13