Simplifying
2a + 4b = 0
Solving
2a + 4b = 0
Solving for variable 'a'.
Move all terms containing a to the left, all other terms to the right.
Add '-4b' to each side of the equation.
2a + 4b + -4b = 0 + -4b
Combine like terms: 4b + -4b = 0
2a + 0 = 0 + -4b
2a = 0 + -4b
Remove the zero:
2a = -4b
Divide each side by '2'.
a = -2b
Simplifying
a = -2b
Hope this helps!!!!