300=40b

Solution for 300=40b equation:

Simplifying
300 = 40b

Solving
300 = 40b

Solving for variable 'b'.

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

Add '-40b' to each side of the equation.
300 + -40b = 40b + -40b

Combine like terms: 40b + -40b = 0
300 + -40b = 0

Add '-300' to each side of the equation.
300 + -300 + -40b = 0 + -300

Combine like terms: 300 + -300 = 0
0 + -40b = 0 + -300
-40b = 0 + -300

Combine like terms: 0 + -300 = -300
-40b = -300

Divide each side by '-40'.
b = 7.5

Simplifying
b = 7.5