Ab+3b-a-39=0

Solution for Ab+3b-a-39=0 equation:

Simplifying
Ab + 3b + -1a + -39 = 0

Reorder the terms:
-39 + -1a + 3b + bA = 0

Solving
-39 + -1a + 3b + bA = 0

Solving for variable 'a'.

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

Add '39' to each side of the equation.
-39 + -1a + 3b + 39 + bA = 0 + 39

Reorder the terms:
-39 + 39 + -1a + 3b + bA = 0 + 39

Combine like terms: -39 + 39 = 0
0 + -1a + 3b + bA = 0 + 39
-1a + 3b + bA = 0 + 39

Combine like terms: 0 + 39 = 39
-1a + 3b + bA = 39

Add '-3b' to each side of the equation.
-1a + 3b + -3b + bA = 39 + -3b

Combine like terms: 3b + -3b = 0
-1a + 0 + bA = 39 + -3b
-1a + bA = 39 + -3b

Add '-1bA' to each side of the equation.
-1a + bA + -1bA = 39 + -3b + -1bA

Combine like terms: bA + -1bA = 0
-1a + 0 = 39 + -3b + -1bA
-1a = 39 + -3b + -1bA

Divide each side by '-1'.
a = -39 + 3b + bA

Simplifying
a = -39 + 3b + bA