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Question

8/21 + 3/14
Is this correct?

(8+3=11)

(14+ 21=35)

=11/35

Answer 1

No. It is not correct. When adding fractions, you need to use a common denominator.

Please study my previous answer to this question.

http://www.jiskha.com/display.cgi?id=1248553775

Answer 2

8/21+3/14

21X4=84
14X6=84
8/84 + 3/84 =11/84

Is this correct?

Answer 3

No. You used a common denominator. But now you need to find the equivalent fractions. You multiplied 21 by 4 to get the denominator. You also need to multiply the numerator by the same number.

8/21 = 32/84
3/14 = 18/84

32/84 + 18/84 = 50/84 = 25/42