42=2a-a+14

Solution for 42=2a-a+14 equation:

Simplifying
42 = 2a + -1a + 14

Reorder the terms:
42 = 14 + 2a + -1a

Combine like terms: 2a + -1a = 1a
42 = 14 + 1a

Solving
42 = 14 + 1a

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.
42 + -1a = 14 + 1a + -1a

Combine like terms: 1a + -1a = 0
42 + -1a = 14 + 0
42 + -1a = 14

Add '-42' to each side of the equation.
42 + -42 + -1a = 14 + -42

Combine like terms: 42 + -42 = 0
0 + -1a = 14 + -42
-1a = 14 + -42

Combine like terms: 14 + -42 = -28
-1a = -28

Divide each side by '-1'.
a = 28

Simplifying
a = 28