2(6+b)+b=3

Solution for 2(6+b)+b=3 equation:

Simplifying
2(6 + b) + b = 3
(6 * 2 + b * 2) + b = 3
(12 + 2b) + b = 3

Combine like terms: 2b + b = 3b
12 + 3b = 3

Solving
12 + 3b = 3

Solving for variable 'b'.

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

Add '-12' to each side of the equation.
12 + -12 + 3b = 3 + -12

Combine like terms: 12 + -12 = 0
0 + 3b = 3 + -12
3b = 3 + -12

Combine like terms: 3 + -12 = -9
3b = -9

Divide each side by '3'.
b = -3

Simplifying
b = -3