69=x(3x*5)

Solution for 69=x(3x*5) equation:

Simplifying
69 = x(3x * 5)

Reorder the terms for easier multiplication:
69 = x(3 * 5x)

Multiply 3 * 5
69 = x(15x)

Remove parenthesis around (15x)
69 = x * 15x

Reorder the terms for easier multiplication:
69 = 15x * x

Multiply x * x
69 = 15x2

Solving
69 = 15x2

Solving for variable 'x'.

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

Add '-15x2' to each side of the equation.
69 + -15x2 = 15x2 + -15x2

Combine like terms: 15x2 + -15x2 = 0
69 + -15x2 = 0

Add '-69' to each side of the equation.
69 + -69 + -15x2 = 0 + -69

Combine like terms: 69 + -69 = 0
0 + -15x2 = 0 + -69
-15x2 = 0 + -69

Combine like terms: 0 + -69 = -69
-15x2 = -69

Divide each side by '-15'.
x2 = 4.6

Simplifying
x2 = 4.6

Take the square root of each side:
x = {-2.144761059, 2.144761059}