9x(-2x)=42

Solution for 9x(-2x)=42 equation:

Simplifying
9x(-2x) = 42

Remove parenthesis around (-2x)
9x * -2x = 42

Reorder the terms for easier multiplication:
9 * -2x * x = 42

Multiply 9 * -2
-18x * x = 42

Multiply x * x
-18x2 = 42

Solving
-18x2 = 42

Solving for variable 'x'.

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

Divide each side by '-18'.
x2 = -2.333333333

Simplifying
x2 = -2.333333333

Reorder the terms:
2.333333333 + x2 = -2.333333333 + 2.333333333

Combine like terms: -2.333333333 + 2.333333333 = 0.000000000
2.333333333 + x2 = 0.000000000

The solution to this equation could not be determined.