75=x*3x

Solution for 75=x*3x equation:

Simplifying
75 = x * 3x

Reorder the terms for easier multiplication:
75 = 3x * x

Multiply x * x
75 = 3x2

Solving
75 = 3x2

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-3x2' to each side of the equation.
75 + -3x2 = 3x2 + -3x2

Combine like terms: 3x2 + -3x2 = 0
75 + -3x2 = 0

Add '-75' to each side of the equation.
75 + -75 + -3x2 = 0 + -75

Combine like terms: 75 + -75 = 0
0 + -3x2 = 0 + -75
-3x2 = 0 + -75

Combine like terms: 0 + -75 = -75
-3x2 = -75

Divide each side by '-3'.
x2 = 25

Simplifying
x2 = 25

Take the square root of each side:
x = {-5, 5}