32.1=a-21.8

Solution for 32.1=a-21.8 equation:

Simplifying
32.1 = a + -21.8

Reorder the terms:
32.1 = -21.8 + a

Solving
32.1 = -21.8 + a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
32.1 + -1a = -21.8 + a + -1a

Combine like terms: a + -1a = 0
32.1 + -1a = -21.8 + 0
32.1 + -1a = -21.8

Add '-32.1' to each side of the equation.
32.1 + -32.1 + -1a = -21.8 + -32.1

Combine like terms: 32.1 + -32.1 = 0.0
0.0 + -1a = -21.8 + -32.1
-1a = -21.8 + -32.1

Combine like terms: -21.8 + -32.1 = -53.9
-1a = -53.9

Divide each side by '-1'.
a = 53.9

Simplifying
a = 53.9