Question

Simplify and fill in the blanks with appropriate answer:

$\frac{11}{21}-\frac{4}{21}+\frac{0}{21}=\_\_\_$

[$\frac{16}{21}$ / $\frac{1}{3}$]

Answer 1

• Step 1: As these are the like fractions, so perform addition and subtraction in the numerators and write the result over the common denominator.

$\frac{11}{21}-\frac{4}{21}+\frac{0}{21}=\frac{11-4+0}{21}=\frac{7}{21}$

• Step 2: It can be observed that $7$ is the common factor of $7$ and $21$. Divide the numerator and denominator by the common factor $7$.

$\frac{7÷7}{21÷7}=\frac{1}{3}$

• Hence, the simplest form of $\frac{7}{21}$ is $\frac{1}{3}$.