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How do you Estimate sums and differences of fractions:1/5 + 3/7

User Kyeotic
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1 Answer

20 votes
20 votes

The given sum is:


(1)/(5)+(3)/(7)

To solve this, you start by multiplying the numerator of the first fraction by the denominator of the second fraction, as the operation is a sum, you add the + symbol and then multiply the denominator of the first fraction by the numerator of the second fraction. This will be the numerator of the result.

For the denominator of the result, you multiply both denominators as follows:


(1)/(5)+(3)/(7)=(1*7+5*3)/(5*7)

Now, let's continue solving:


(1*7+5*3)/(5*7)=(7+15)/(35)=(22)/(35)

User Nyedidikeke
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