Add. show your work. 1  4/5 + 1  6/10 subtract. show your work. 2  3/4  - 1  2/8

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Change mixed fraction into an improper fraction

: are both even numbers, so you can further simplify by dividing by 2


To add fractions, we need same denominator to proceed. Here we have no problem since both denominators are 5




As a mixed fraction: 
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Let us change the mixed fraction into an improper fraction:

: You can further simplify this since both are divisible by 2


We have the same denominator set for subtraction, so you do not have to find common denominators



As a mixed fraction: 

What's the denominator