Solve b/3a-b/4a

$$\frac { b } { 3 a } - \frac { b } { 4 a }$$

Evaluate

$$\frac{b}{12a}$$

Short Solution Steps

To add or subtract expressions, expand them to make their denominators the same. Least common multiple of 3a and 4a is 12a. Multiply \frac{b}{3a} times \frac{4}{4}. Multiply \frac{b}{4a} times \frac{3}{3}.

$$\frac{4b}{12a}-\frac{3b}{12a}$$

Since \frac{4b}{12a} and \frac{3b}{12a} have the same denominator, subtract them by subtracting their numerators.

$$\frac{4b-3b}{12a}$$

Combine like terms in 4b-3b.

$$\frac{b}{12a}$$

Differentiate w.r.t. b

$$\frac{1}{12a}$$