2+3+1-4=a

Solution for 2+3+1-4=a equation:

Simplifying
2 + 3 + 1 + -4 = a

Combine like terms: 2 + 3 = 5
5 + 1 + -4 = a

Combine like terms: 5 + 1 = 6
6 + -4 = a

Combine like terms: 6 + -4 = 2
2 = a

Solving
2 = 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.
2 + -1a = a + -1a

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

Add '-2' to each side of the equation.
2 + -2 + -1a = 0 + -2

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

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

Divide each side by '-1'.
a = 2

Simplifying
a = 2