3-(-5)=a

Solution for 3-(-5)=a equation:

Simplifying
3 + -1(-5) = a

Multiply -1 * -5
3 + 5 = a

Combine like terms: 3 + 5 = 8
8 = a

Solving
8 = 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.
8 + -1a = a + -1a

Combine like terms: a + -1a = 0
8 + -1a = 0

Add '-8' to each side of the equation.
8 + -8 + -1a = 0 + -8

Combine like terms: 8 + -8 = 0
0 + -1a = 0 + -8
-1a = 0 + -8

Combine like terms: 0 + -8 = -8
-1a = -8

Divide each side by '-1'.
a = 8

Simplifying
a = 8