6x+4=3x+12 => 6x-3x=12-4 => 3x=8 => x=8/3=2.666...
3x + 5 = 6x + 23 -3x = 18 x = -6
3x+42=6x+12 42=6x-3x+12 42=3x+12 42-12=3x 30=3x 10=x
3x+50=6x+14 50-14=6x-3x 36=3x x=36 / 3 therefore x=12
5x^2 + 6x + 9 + (?) = -x^2 +3x + 3 (?) = -5x^2 -6x - 9 -x^2 +3x + 3 = -6x^2 -3x -6 Ans: -6x squared +3x -6
6x
3x + 6y + 6x = 9x + 6y which can be factorised as 3(3x +2y)
3x + 6x - x= 8x
6x+4=3x+12 => 6x-3x=12-4 => 3x=8 => x=8/3=2.666...
3x + 5 = 6x + 23 -3x = 18 x = -6
3x+42=6x+12 42=6x-3x+12 42=3x+12 42-12=3x 30=3x 10=x
It is: 3x+4
3x+50=6x+14 50-14=6x-3x 36=3x x=36 / 3 therefore x=12
5x^2 + 6x + 9 + (?) = -x^2 +3x + 3 (?) = -5x^2 -6x - 9 -x^2 +3x + 3 = -6x^2 -3x -6 Ans: -6x squared +3x -6
9x + 8 = 6x + 20(- 8 from both sides)9x = 6x + 12(- 6x from both sides)3x = 12(divide both sides by 3)x = 4
6x + 8
3x + x + 8 = 204x + 8 = 204x = 12x = 3