1200+45=a

Solution for 1200+45=a equation:

Simplifying
1200 + 45 = a

Combine like terms: 1200 + 45 = 1245
1245 = a

Solving
1245 = 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.
1245 + -1a = a + -1a

Combine like terms: a + -1a = 0
1245 + -1a = 0

Add '-1245' to each side of the equation.
1245 + -1245 + -1a = 0 + -1245

Combine like terms: 1245 + -1245 = 0
0 + -1a = 0 + -1245
-1a = 0 + -1245

Combine like terms: 0 + -1245 = -1245
-1a = -1245

Divide each side by '-1'.
a = 1245

Simplifying
a = 1245