-a+2a+3b+4b=

Solution for -a+2a+3b+4b= equation:

Simplifying
-1a + 2a + 3b + 4b = 0

Combine like terms: -1a + 2a = 1a
1a + 3b + 4b = 0

Combine like terms: 3b + 4b = 7b
1a + 7b = 0

Solving
1a + 7b = 0

Solving for variable 'a'.

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

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

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

Divide each side by '1'.
a = -7b

Simplifying
a = -7b