72=21x

Solution for 72=21x equation:

Simplifying
72 = 21x

Solving
72 = 21x

Solving for variable 'x'.

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

Add '-21x' to each side of the equation.
72 + -21x = 21x + -21x

Combine like terms: 21x + -21x = 0
72 + -21x = 0

Add '-72' to each side of the equation.
72 + -72 + -21x = 0 + -72

Combine like terms: 72 + -72 = 0
0 + -21x = 0 + -72
-21x = 0 + -72

Combine like terms: 0 + -72 = -72
-21x = -72

Divide each side by '-21'.
x = 3.428571429

Simplifying
x = 3.428571429