-7a-8a-6=0

Solution for -7a-8a-6=0 equation:

Simplifying
-7a + -8a + -6 = 0

Reorder the terms:
-6 + -7a + -8a = 0

Combine like terms: -7a + -8a = -15a
-6 + -15a = 0

Solving
-6 + -15a = 0

Solving for variable 'a'.

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

Add '6' to each side of the equation.
-6 + 6 + -15a = 0 + 6

Combine like terms: -6 + 6 = 0
0 + -15a = 0 + 6
-15a = 0 + 6

Combine like terms: 0 + 6 = 6
-15a = 6

Divide each side by '-15'.
a = -0.4

Simplifying
a = -0.4