12=3(b-11)

Solution for 12=3(b-11) equation:

Simplifying
12 = 3(b + -11)

Reorder the terms:
12 = 3(-11 + b)
12 = (-11 * 3 + b * 3)
12 = (-33 + 3b)

Solving
12 = -33 + 3b

Solving for variable 'b'.

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

Add '-3b' to each side of the equation.
12 + -3b = -33 + 3b + -3b

Combine like terms: 3b + -3b = 0
12 + -3b = -33 + 0
12 + -3b = -33

Add '-12' to each side of the equation.
12 + -12 + -3b = -33 + -12

Combine like terms: 12 + -12 = 0
0 + -3b = -33 + -12
-3b = -33 + -12

Combine like terms: -33 + -12 = -45
-3b = -45

Divide each side by '-3'.
b = 15

Simplifying
b = 15