-9
15xy-2xy-7x+x=13xy-6x
6x-2y
Simple,its just like this: 6x+1+7-3 =6x+8-3 =6x+5
-x2 + 6x + 16 = -(x2 - 6x - 16) = -(x - 8)(x + 2) = -(8 - x)(x + 2)
-9
15xy-2xy-7x+x=13xy-6x
6x + 9 + 2x = 8x + 9
Well, honey, you just add those like terms together. 5x plus x is the same as 6x. It's as simple as that, darling.
7x + 7 + 6x - 9 = 13x - 2
x + 2x + 6x = 9x
6x-2y
x^2-4x/x^2-6x+8 = x(x-4)/(x-2)(x-4) = x/(x-2)
Simple,its just like this: 6x+1+7-3 =6x+8-3 =6x+5
6x+x=7x
6x plus 4y
Following the correct order of operations, 8x + (1)(121) - (x/6x)(9)-x=8x+121-1.5-x=7x+119.5