3-1=5-a

Solution for 3-1=5-a equation:

Simplifying
3 + -1 = 5 + -1a

Combine like terms: 3 + -1 = 2
2 = 5 + -1a

Solving
2 = 5 + -1a

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add 'a' to each side of the equation.
2 + a = 5 + -1a + a

Combine like terms: -1a + a = 0
2 + a = 5 + 0
2 + a = 5

Add '-2' to each side of the equation.
2 + -2 + a = 5 + -2

Combine like terms: 2 + -2 = 0
0 + a = 5 + -2
a = 5 + -2

Combine like terms: 5 + -2 = 3
a = 3

Simplifying
a = 3