How do you evaluate #\frac { 7} { 10} + 7\frac { 19} { 30} =#?

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Answer 1 · 2017-02-08T15:08:58

#8 1/3#

When adding fractions, it is not necessary to change to improper fractions first. You can work with the whole numbers separately.

#7/10+7 19/30" "# add the whole numbers, then the fractions

#= 7 (21+19)/30#

#=7 40/30#

#=7 + 1 10/30#

#=8 1/3#

Using improper fractions make the numerators very big.
Compare:

#7/10 +229/30#

#=(21+229)/30#

#=250/30#

#=8 10/30 = 8 1/3#

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