x is called a variable. It is an unknown quantity that is to be solved for.
16-X = 9
add X to both sides
16 = 9 + X
subtract 9 from both sides
7 = X
( of course you can just look at this problem and see what X is )
16x - 10x + 9 = 99 - 30 6x + 9 = 69 so 6x = 60 or x = 10
.25
If: 16x-15-6x = 13 Then: 10x = 28 And: x = 2.8.
x2 - 16x + 68 = 5 (x - 8)2 + 4 = 5 (x - 8)2 = 1 x - 8 = 1 or -1 x = 9 or 7
7.5625
16x - 10x + 9 = 99 - 30 6x + 9 = 69 so 6x = 60 or x = 10
Simplifying we get 6x + 9 = 69 so x = 10
4x + 9 = 254x = 25 - 94 x = 16x= 16/4x= 4
.25
If: 16x-15-6x = 13 Then: 10x = 28 And: x = 2.8.
16x = 4 Divide both sides by 16: x = 4/16 x = 1/4
x=2.52
x2 - 16x + 68 = 5 (x - 8)2 + 4 = 5 (x - 8)2 = 1 x - 8 = 1 or -1 x = 9 or 7
-7+11x = 9-5x 11x+5x = 9+7 16x = 16 x = 1
To solve for X in the equation "X over 9 equals 1 over 16," we can cross multiply. This gives us 16X = 9. Dividing both sides by 16 gives us X = 9/16.
7.5625
If your function is 4x^2+16x+16=0 then x=-2, if it is 4x^2-16x+16=0, then x=2