Answer:
[tex]\frac{57}{100}[/tex]
Step-by-step explanation:
The fractions need to have the same denominator to add or subtract them.
The least common denominator is 100, multiply [tex]\frac{3}{10}[/tex] by [tex]\frac{10}{10}[/tex] to give it the same denominator as the first term
[tex]\frac{27}{100}[/tex] + [tex]\frac{30}{100}[/tex] = [tex]\frac{57}{100}[/tex]
