Question

7/10 + 21/100

Answer 1

Solution. Reduce fractions to a common denominator and add.

$$\frac {7} {10} + \frac {21} {100}=\frac {70} {100} + \frac {21} {100} =\frac {70+21} {100}= \frac {91} {100} = 0.91$$

Answer. 

$$\frac {91} {100} = 0.91$$