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What number should be added to 7/12 to get 4/15 ?

Posted by Kashika Kukreja 1 year, 3 months ago

CBSE > Class 07 > Mathematics

1 answers

Sri Varshini 1 year, 3 months ago

Let the required number be x. According to the question, ⇒ 12 7 +x= 15 −4 ⇒ x= 15 −4 − 12 7 L.C.M of 15 and 12 is 60 ⇒ x= 15×4 −4×4 − 12×5 7×5 ⇒ x= 60 −16 − 60 35 ⇒ x= 60 −16−35 ⇒ x= 60 −51 ∴ x= 20 −17 ∴ 20 −17 should be added to 12 7 to get 15 −4 .

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