8+4a+6.2+9a=

Solution for 8+4a+6.2+9a= equation:

Simplifying
8 + 4a + 6.2 + 9a = 0

Reorder the terms:
8 + 6.2 + 4a + 9a = 0

Combine like terms: 8 + 6.2 = 14.2
14.2 + 4a + 9a = 0

Combine like terms: 4a + 9a = 13a
14.2 + 13a = 0

Solving
14.2 + 13a = 0

Solving for variable 'a'.

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

Add '-14.2' to each side of the equation.
14.2 + -14.2 + 13a = 0 + -14.2

Combine like terms: 14.2 + -14.2 = 0.0
0.0 + 13a = 0 + -14.2
13a = 0 + -14.2

Combine like terms: 0 + -14.2 = -14.2
13a = -14.2

Divide each side by '13'.
a = -1.092307692

Simplifying
a = -1.092307692