3+6(3-7b)=

Solution for 3+6(3-7b)= equation:

Simplifying
3 + 6(3 + -7b) = 0
3 + (3 * 6 + -7b * 6) = 0
3 + (18 + -42b) = 0

Combine like terms: 3 + 18 = 21
21 + -42b = 0

Solving
21 + -42b = 0

Solving for variable 'b'.

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

Add '-21' to each side of the equation.
21 + -21 + -42b = 0 + -21

Combine like terms: 21 + -21 = 0
0 + -42b = 0 + -21
-42b = 0 + -21

Combine like terms: 0 + -21 = -21
-42b = -21

Divide each side by '-42'.
b = 0.5

Simplifying
b = 0.5