121+2=a

Solution for 121+2=a equation:

Simplifying
121 + 2 = a

Combine like terms: 121 + 2 = 123
123 = a

Solving
123 = 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.
123 + -1a = a + -1a

Combine like terms: a + -1a = 0
123 + -1a = 0

Add '-123' to each side of the equation.
123 + -123 + -1a = 0 + -123

Combine like terms: 123 + -123 = 0
0 + -1a = 0 + -123
-1a = 0 + -123

Combine like terms: 0 + -123 = -123
-1a = -123

Divide each side by '-1'.
a = 123

Simplifying
a = 123