9*81=x

Solution for 9*81=x equation:

Simplifying
9 * 81 = x

Multiply 9 * 81
729 = x

Solving
729 = x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
729 + -1x = x + -1x

Combine like terms: x + -1x = 0
729 + -1x = 0

Add '-729' to each side of the equation.
729 + -729 + -1x = 0 + -729

Combine like terms: 729 + -729 = 0
0 + -1x = 0 + -729
-1x = 0 + -729

Combine like terms: 0 + -729 = -729
-1x = -729

Divide each side by '-1'.
x = 729

Simplifying
x = 729