A+3b+a+4b=

Solution for A+3b+a+4b= equation:

Simplifying
A + 3b + a + 4b = 0

Reorder the terms:
A + a + 3b + 4b = 0

Combine like terms: 3b + 4b = 7b
A + a + 7b = 0

Solving
A + a + 7b = 0

Solving for variable 'A'.

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

Add '-1a' to each side of the equation.
A + a + -1a + 7b = 0 + -1a

Combine like terms: a + -1a = 0
A + 0 + 7b = 0 + -1a
A + 7b = 0 + -1a
Remove the zero:
A + 7b = -1a

Add '-7b' to each side of the equation.
A + 7b + -7b = -1a + -7b

Combine like terms: 7b + -7b = 0
A + 0 = -1a + -7b
A = -1a + -7b

Simplifying
A = -1a + -7b