How do you evaluate #-63/80 + 7 /10#?

1 Answer
Mar 13, 2018

See a solution process below:

Explanation:

To add or subtract fractions they must be over a common denominator. We can rewrite the expression as:

#-63/80 + (8/8 xx 7/10) =>#

#-63/80 + (8 xx 7)/(8 xx 10) =>#

#-63/80 + 56/80#

We can now evaluate the expression as:

#(-63 + 56)/80 =>#

#-7/80#