Subtract and simplify.
-$\frac { 7 } { 9 } - \frac { 1 } { 12 }$
A) $\frac { 13 } { 18 }$
B) $\frac { 25 } { 36 }$
C) $\frac { 1 } { 2 }$
D) $\frac { 2 } { 3 }$

Question

Quizplus · Accepted Answer

To subtract fractions, you need a common denominator. The least common multiple of 9 and 12 is 36. Convert each fraction: $\frac{7}{9} = \frac{28}{36}$ and $\frac{1}{12} = \frac{3}{36}$. Subtracting gives $\frac{28}{36} - \frac{3}{36} = \frac{25}{36}$.

Subtract and Simplify 79−112\frac { 7 } { 9 } - \frac { 1 } { 12 }97​−121​

Subtract and Simplify $\frac { 7 } { 9 } - \frac { 1 } { 12 }$