How do you evaluate #2/5 + 3/10#?

1 Answer
Jun 28, 2016

Answer:

Convert the fractions so they have a common denominator; then add the numerators to get #7/10#

Explanation:

Given
#color(white)("XXX")2/5+3/10#

To add fractions we need to write them with the same denominator:
and since #2/5=4/10#

#color(white)("XXX")2/5+3/10 = 4/10+3/10#

When fractions have the same denominator we can add the numerators and write the sum over that common denominator:
#color(white)("XXX")4/10+3/10=(4+3)/10=7/10#