21.5=a+1.4

Solution for 21.5=a+1.4 equation:

Simplifying
21.5 = a + 1.4

Reorder the terms:
21.5 = 1.4 + a

Solving
21.5 = 1.4 + 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.
21.5 + -1a = 1.4 + a + -1a

Combine like terms: a + -1a = 0
21.5 + -1a = 1.4 + 0
21.5 + -1a = 1.4

Add '-21.5' to each side of the equation.
21.5 + -21.5 + -1a = 1.4 + -21.5

Combine like terms: 21.5 + -21.5 = 0.0
0.0 + -1a = 1.4 + -21.5
-1a = 1.4 + -21.5

Combine like terms: 1.4 + -21.5 = -20.1
-1a = -20.1

Divide each side by '-1'.
a = 20.1

Simplifying
a = 20.1