3a+8b-b+4-2a-4=

Solution for 3a+8b-b+4-2a-4= equation:

Simplifying
3a + 8b + -1b + 4 + -2a + -4 = 0

Reorder the terms:
4 + -4 + 3a + -2a + 8b + -1b = 0

Combine like terms: 4 + -4 = 0
0 + 3a + -2a + 8b + -1b = 0
3a + -2a + 8b + -1b = 0

Combine like terms: 3a + -2a = 1a
1a + 8b + -1b = 0

Combine like terms: 8b + -1b = 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