Rewrite as addition: Rewrite the subtraction of a negative number as addition.(85)−(−(27))=(85)+(27)
Find common denominator: Find a common denominator for the two fractions.The least common multiple of 8 and 2 is 8, so we will use 8 as the common denominator.
Convert to common denominator: Convert the second fraction to have the common denominator.(27) can be written as (828) because 7×4=28 and 2×4=8.
Add fractions: Add the two fractions with the common denominator.(85)+(828)=(85+28)=833
Check for simplification: Check if the resulting fraction can be simplified. 33 and 8 have no common factors other than 1, so the fraction is already in its simplest form.
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