If that's -9 - 6x + 9, it simplifies to -6x
12x^2+10
6x + 9 + 2x = 8x + 9
6x^2
(3x - 30)(x + 8) can also simplify to 3(x - 10)(x + 8)
6x-2y
12
Ah, what a lovely little math problem we have here. When you have 6x minus 6x, you see that the two terms are the same but with opposite signs. So when you subtract them, they cancel each other out, leaving you with 0. It's like two little friends giving each other a hug and disappearing into thin air. Just a happy little zero left behind.
7x + 7 + 6x - 9 = 13x - 2
Simple,its just like this: 6x+1+7-3 =6x+8-3 =6x+5
If you mean 'simplify': (3x + 5)/15 I simply divided the coefficients (numbers) by 2.
6x - 5 -5 = 0 6x -10 = 0 +10=+10 6x=10 x= about 1.4