Is 1 / x = 3 + 3x a linear equation with one variable

Is 1 / x = 3 + 3x a linear equation with one variable

The equation becomes 3x ^ 2 + 3x = 1 after deformation, and the degree of unknowns is twice, so it is definitely not a one variable quadratic equation. But this equation can not be called a one variable quadratic equation, because the unknowns appear in the denominator position
Positive solution: not a linear equation of one variable

In the following equations: (1) 3x + 1 = x-3; (2) x + y = 5-2x; (3) x2 + 2x + 2 = 0; (4) LX + 1-2 = 0 is a linear equation of one variable______ ．

(1) 3x + 1 = x-3 is a linear equation with one variable; (2) x + y = 5-2x quadratic equation with two variables; (3) x2 + 2x + 2 = 0 quadratic equation with one variable; (4) 1x + 1-2 = 0 fractional equation

Solving the linear equation x / 2 + 3x / 2 = 7

4X = 14, x = 3.5 hope to be useful to you,

Linear equation of one variable 3x = 3x-1
3x=3x-1
What's the solution to this x,

No solution