(3.8f+9)(0.4)=

Solution for (3.8f+9)(0.4)= equation:

Simplifying
(3.8f + 9)(0.4) = 0

Reorder the terms:
(9 + 3.8f)(0.4) = 0

Reorder the terms for easier multiplication:
0.4(9 + 3.8f) = 0
(9 * 0.4 + 3.8f * 0.4) = 0
(3.6 + 1.52f) = 0

Solving
3.6 + 1.52f = 0

Solving for variable 'f'.

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

Add '-3.6' to each side of the equation.
3.6 + -3.6 + 1.52f = 0 + -3.6

Combine like terms: 3.6 + -3.6 = 0.0
0.0 + 1.52f = 0 + -3.6
1.52f = 0 + -3.6

Combine like terms: 0 + -3.6 = -3.6
1.52f = -3.6

Divide each side by '1.52'.
f = -2.368421053

Simplifying
f = -2.368421053