2-18-7a=a

Solution for 2-18-7a=a equation:

Simplifying
2 + -18 + -7a = a

Combine like terms: 2 + -18 = -16
-16 + -7a = a

Solving
-16 + -7a = 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.
-16 + -7a + -1a = a + -1a

Combine like terms: -7a + -1a = -8a
-16 + -8a = a + -1a

Combine like terms: a + -1a = 0
-16 + -8a = 0

Add '16' to each side of the equation.
-16 + 16 + -8a = 0 + 16

Combine like terms: -16 + 16 = 0
0 + -8a = 0 + 16
-8a = 0 + 16

Combine like terms: 0 + 16 = 16
-8a = 16

Divide each side by '-8'.
a = -2

Simplifying
a = -2