Question

решите уравнение -x-2+3(x-3)=3(4-x)-3

Answer 1

-x-2+3(x-3)=3(4-x)-3;

-х-2+3х-9=12-3х-3;

-х+3х+3х=12-3+2+9

5х=20

х=4

Ответ:4.

Answer 2

- x - 2 + 3( x - 3 ) = 3( 4 - x ) - 3
- x - 2 + 3x - 9 = 12 - 3x - 3
2x - 11 = - 3x + 9
5x = 20 
x = 20 : 5 
x = 4