Solve 3/r+3/4=

$$\frac { 3 } { r } + \frac { 3 } { 4 } =$$

Evaluate

$$\frac{3}{4}+\frac{3}{r}$$

Short Solution Steps

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

$$\frac{3\times 4}{4r}+\frac{3r}{4r}$$

Since \frac{3\times 4}{4r} and \frac{3r}{4r} have the same denominator, add them by adding their numerators.

$$\frac{3\times 4+3r}{4r}$$

Do the multiplications in 3\times 4+3r.

$$\frac{12+3r}{4r}$$

Factor

$$\frac{3\left(r+4\right)}{4r}$$