1) (x+б) + (x+2б) - (x-3б) = 8бx + б + x + 2б - x + 3б = 8б3x + 6б = 8б3x = 2бx = 2б/3
2) x^2 - (x+с) - (x^2 - 2x - 3с) = 0x^2 - x - с - x^2 + 2x + 3с = 0x + 2с = 0x = -2с
3) (6х - 4n) - (2x^2 + x) + (2x^2 - n) = 06x - 4n - 2x^2 - x + 2x^2 - n = 04x - 5n = 04x = 5nx = 5n/4
1) (x+б) + (x+2б) - (x-3б) = 8б
x + б + x + 2б - x + 3б = 8б
3x + 6б = 8б
3x = 2б
x = 2б/3
2) x^2 - (x+с) - (x^2 - 2x - 3с) = 0
x^2 - x - с - x^2 + 2x + 3с = 0
x + 2с = 0
x = -2с
3) (6х - 4n) - (2x^2 + x) + (2x^2 - n) = 0
6x - 4n - 2x^2 - x + 2x^2 - n = 0
4x - 5n = 0
4x = 5n
x = 5n/4