Question

1/5+1/7+3/21 the answer is

Answer 1

17/35

Explanation:

We need to get all the fractions with a common denominator before we can solve the problem.

The only fractions that have a common multiple are 1/7 and 3/21, so we'll add these first and then add 1/5.

1/7 = 3/21

Add

`(3)/(21) + (3)/(21) =(6)/(21)`

6/21 = 30/105

1/5 = 21/105

`(30)/(105) + (21)/(105) = (51)/(105)`

Simplify

`(51)/(105) / (3)/(3) =(17)/(35)`

ANSWER: 17/35

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