72=2.25x(.2)

Solution for 72=2.25x(.2) equation:

Simplifying
72 = 2.25x(0.2)

Reorder the terms for easier multiplication:
72 = 2.25 * 0.2x

Multiply 2.25 * 0.2
72 = 0.45x

Solving
72 = 0.45x

Solving for variable 'x'.

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

Add '-0.45x' to each side of the equation.
72 + -0.45x = 0.45x + -0.45x

Combine like terms: 0.45x + -0.45x = 0.00
72 + -0.45x = 0.00

Add '-72' to each side of the equation.
72 + -72 + -0.45x = 0.00 + -72

Combine like terms: 72 + -72 = 0
0 + -0.45x = 0.00 + -72
-0.45x = 0.00 + -72

Combine like terms: 0.00 + -72 = -72
-0.45x = -72

Divide each side by '-0.45'.
x = 160

Simplifying
x = 160