(4b+1)(9)=

Solution for (4b+1)(9)= equation:

Simplifying
(4b + 1)(9) = 0

Reorder the terms:
(1 + 4b)(9) = 0

Reorder the terms for easier multiplication:
9(1 + 4b) = 0
(1 * 9 + 4b * 9) = 0
(9 + 36b) = 0

Solving
9 + 36b = 0

Solving for variable 'b'.

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

Add '-9' to each side of the equation.
9 + -9 + 36b = 0 + -9

Combine like terms: 9 + -9 = 0
0 + 36b = 0 + -9
36b = 0 + -9

Combine like terms: 0 + -9 = -9
36b = -9

Divide each side by '36'.
b = -0.25

Simplifying
b = -0.25