42=14-a-4

Solution for 42=14-a-4 equation:

Simplifying
42 = 14 + -1a + -4

Reorder the terms:
42 = 14 + -4 + -1a

Combine like terms: 14 + -4 = 10
42 = 10 + -1a

Solving
42 = 10 + -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.
42 + a = 10 + -1a + a

Combine like terms: -1a + a = 0
42 + a = 10 + 0
42 + a = 10

Add '-42' to each side of the equation.
42 + -42 + a = 10 + -42

Combine like terms: 42 + -42 = 0
0 + a = 10 + -42
a = 10 + -42

Combine like terms: 10 + -42 = -32
a = -32

Simplifying
a = -32