6x+x=7x
The value of x2+7x+10 depends on the value of X. If x=1, then x2+7x+10 = 18 If x=2, then x2+7x+10 = 28 If x=3, then x2+7x+10 = 40 and so forth
Presumably this is an equation in which the value of x is to be found. 7x+8 = 4x-10 7x-4x = -10-8 3x = -18 x = -6
(x+2)(x-9)
-7+4>18
7x = 18 - 2x 7x + 2x = 18 9x = 18 x = 2
18 + 7x - 12 + 5x = ?18 - 12+ 7x - 5x = ?6 + 2x = ?
9x+6 = 7x+18 9x-7x = 18-6 2x = 12 x = 6
x2-7x-18 = (x-9)(x+2) when factored
7x + 6 = -18 7x = -24 x = -24/7 x = -3.428571 recurring (that is, -3.428571428571...)
It is a pair of expressions -24 and 7x + 18 which are unrelated to one another.
27
2x+18=7x-30 7x-30=2x=18 7x-2x=18+30 5x=48 x=9.6
7x - 18 = 66, solve for x. First step is to add 18 to both sides. So 7x = 84. Now divide by sides by 7 to get x = 12
(x2 + 7x - 18) = (x + 9)(x - 2)
x^2 + 7x -18 = (x - 2)(x + 9)
18