2014-21=a

Solution for 2014-21=a equation:

Simplifying
2014 + -21 = a

Combine like terms: 2014 + -21 = 1993
1993 = a

Solving
1993 = 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.
1993 + -1a = a + -1a

Combine like terms: a + -1a = 0
1993 + -1a = 0

Add '-1993' to each side of the equation.
1993 + -1993 + -1a = 0 + -1993

Combine like terms: 1993 + -1993 = 0
0 + -1a = 0 + -1993
-1a = 0 + -1993

Combine like terms: 0 + -1993 = -1993
-1a = -1993

Divide each side by '-1'.
a = 1993

Simplifying
a = 1993