How do write in simplest form given #-2/5+17/20#?
2 Answers
Explanation:
To do the simplification we require the denominators of the fractions to be the same.
To make the denominator of the first fraction 20, multiply numerator/denominator by 4, equivalent to multiplying by 1.
#-2/5xx4/4=-8/20# We now have.
#-8/20+17/20# Now we just add the numerators.
#rArr-8/20+17/20=(-8+17)/20=9/20#
Explanation:
You can not 'directly' add or subtract counts unless the size indicators are the same.
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Make all the size indicators (denominators) the same then subtract the counts (numerators).