3+2a-1+6a=

Solution for 3+2a-1+6a= equation:

Simplifying
3 + 2a + -1 + 6a = 0

Reorder the terms:
3 + -1 + 2a + 6a = 0

Combine like terms: 3 + -1 = 2
2 + 2a + 6a = 0

Combine like terms: 2a + 6a = 8a
2 + 8a = 0

Solving
2 + 8a = 0

Solving for variable 'a'.

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

Add '-2' to each side of the equation.
2 + -2 + 8a = 0 + -2

Combine like terms: 2 + -2 = 0
0 + 8a = 0 + -2
8a = 0 + -2

Combine like terms: 0 + -2 = -2
8a = -2

Divide each side by '8'.
a = -0.25

Simplifying
a = -0.25