0=42+(a)(5.5)

Solution for 0=42+(a)(5.5) equation:

Simplifying
0 = 42 + (a)(5.5)

Reorder the terms for easier multiplication:
0 = 42 + 5.5a

Solving
0 = 42 + 5.5a

Solving for variable 'a'.

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

Add '-5.5a' to each side of the equation.
0 + -5.5a = 42 + 5.5a + -5.5a
Remove the zero:
-5.5a = 42 + 5.5a + -5.5a

Combine like terms: 5.5a + -5.5a = 0.0
-5.5a = 42 + 0.0
-5.5a = 42

Divide each side by '-5.5'.
a = -7.636363636

Simplifying
a = -7.636363636