7005-3915=a

Solution for 7005-3915=a equation:

Simplifying
7005 + -3915 = a

Combine like terms: 7005 + -3915 = 3090
3090 = a

Solving
3090 = 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.
3090 + -1a = a + -1a

Combine like terms: a + -1a = 0
3090 + -1a = 0

Add '-3090' to each side of the equation.
3090 + -3090 + -1a = 0 + -3090

Combine like terms: 3090 + -3090 = 0
0 + -1a = 0 + -3090
-1a = 0 + -3090

Combine like terms: 0 + -3090 = -3090
-1a = -3090

Divide each side by '-1'.
a = 3090

Simplifying
a = 3090