3(30+b)=b

Solution for 3(30+b)=b equation:

Simplifying
3(30 + b) = b
(30 * 3 + b * 3) = b
(90 + 3b) = b

Solving
90 + 3b = b

Solving for variable 'b'.

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

Add '-1b' to each side of the equation.
90 + 3b + -1b = b + -1b

Combine like terms: 3b + -1b = 2b
90 + 2b = b + -1b

Combine like terms: b + -1b = 0
90 + 2b = 0

Add '-90' to each side of the equation.
90 + -90 + 2b = 0 + -90

Combine like terms: 90 + -90 = 0
0 + 2b = 0 + -90
2b = 0 + -90

Combine like terms: 0 + -90 = -90
2b = -90

Divide each side by '2'.
b = -45

Simplifying
b = -45