4a+7b+5a+b=

Solution for 4a+7b+5a+b= equation:

Simplifying
4a + 7b + 5a + b = 0

Reorder the terms:
4a + 5a + 7b + b = 0

Combine like terms: 4a + 5a = 9a
9a + 7b + b = 0

Combine like terms: 7b + b = 8b
9a + 8b = 0

Solving
9a + 8b = 0

Solving for variable 'a'.

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

Add '-8b' to each side of the equation.
9a + 8b + -8b = 0 + -8b

Combine like terms: 8b + -8b = 0
9a + 0 = 0 + -8b
9a = 0 + -8b
Remove the zero:
9a = -8b

Divide each side by '9'.
a = -0.8888888889b

Simplifying
a = -0.8888888889b