It is equal to 21x You can not find x.
7x+7=28x 28x-7x=7 21x=7 x=3
(7x + 7)(x + 2) = 7x2 + 21x + 14
3x2-21x+36 =3(x2-7x+12) =3(x-4)(x-3)
Do you mean 7x+2y = 16 and 21x-6y = 24? If so then it is simultaneous equation with the solution being: x = 12/7 and y = 2
7x
21x^2
(7x+2)(2y-1)
3(7x-6)
3(7x + 11)
It is equal to 21x You can not find x.
7x = 42 or 21x = 42
7x+7=28x 28x-7x=7 21x=7 x=3
6 - 7x = 24 - 21xSubtract 6 from both sides:- 7x = 18 - 21xAdd 21x to both sides:14x = 18Divide both sides by 14:x = 18/14 = 9/7
(7x + 7)(x + 2) = 7x2 + 21x + 14
7x+2y=16 21x+6y=24 y=8-(7/2)x y=4-(7/2)x 0= 4 the system has no rational solution.
3x2-21x+36 =3(x2-7x+12) =3(x-4)(x-3)