x? +2 = 3 times
x? -3x+2=0
(x- 1)(x-2)=0
X= 1 or x=2.
2、x+6÷x=5
x? +6 = 5 times
x? -x+5=0
(x- 1)(x-5)=0
X= 1 or x=5.
3、x+ 12÷x=7
x? + 12=7x
x? -7x+ 12=0
(x-3)(x-4)=0
X=3 or x=4.
And: x+(n? +n)÷(x-3)=2n+4
x(x-3)+(n? +n)=(2n+4)(x-3)
x? -3x+n? +n=2nx+4x-6n- 12
x? -3x-2nx-4x+n? +n+6n+ 12=0
x? -(2n+7)x+n? +7n+ 12=0
x? -[(n+3)+(n+4)]x+(n+3)(n+4)=0
[x-(n+3)][x-(n+4)]=0
X=n+3 or x=n+4.