-5+6(-x-2(x-4))=7(5-2x)-x
- 5 + 6( - Х - 2( Х - 4 )) = 7( 5 - 2х ) - Х - 5 + 6( - Х - 2х + 8 ) = 35 - 14х - Х - 5 + 6( - 3х + 8 ) = 35 - 15х - 5 - 18х + 48 = 35 - 15x - 18x + 43 = 35 - 15x 18x - 15x = 43 - 35 3x = 8 X = 8/3 = 2 2/3