Question

What is the sum of 3/7 + 1/3

Answer 1

Answer:

16/21

Step-by-step explanation:

1) Find the least common denominator (LCD) of 3/7,1/3. In other words, find the Least Common Multiple (LCM) of 7,3.

LCD=21

2) Make the denominators the same as the LCD

$\frac{3*3}{7*3} +\frac{1*7}{3*7}$

3) Simplify. Denominators are now the same.

$\frac{9}{21} +\frac{7}{21}$

4) Join the denominators

$\frac{9+7}{21}$

5) Simplify

$\frac{16}{21}$

Answer 2

Answer:

${ \tt{ \frac{3}{7} + \frac{1}{3} }} \\ \\ = { \tt{ \frac{(3 \times 3) + (7 \times 1)}{21} }} \\ \\ = { \tt{ \frac{9 + 7}{21} }} \\ \\ = \: \dashrightarrow \: { \tt{ \frac{16}{21} }}$