How to solve 7/9 - 2/3

1) List all the multiples of each denominator and find the first common multiple:

9 = 9

3 = 3, 6, 9

So the LCD is 9

2) Make the denominators the same as the LCD:

7/9 - 2x3/3x3

3) Simplify. The denominators are now the same:

7/9 - 6/9

4) Join the denominators:

7-6/9

5) Simplify:

1/9

(Decimal form: 0.111111