Question

what should be added to 7/12 to get 4/15 ?
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Answer 1

Answer:

{-19} / {60}

Step-by-step explanation:

Let the number be x

A number should be added to {7} / {12} to get {4} / {15}

So, x + {7} / {12} = {4} / {15}

x= {4} / {15} - {7} / {12}

Take LCM of 15 and 12 is 60

x= {4} / {15} - {7} / {12}

x= {16-35} / {60}

x= {-19} / {60}

Hence, {-19} / {60} should be added to {7} / {12} to get {4} / {15}

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Answer 2

Answer:

7/12=35/60-----1  

4/15=16/60------2  

( here  to make the denominator equal we multiply numerator and denominator of 1 and 2 by 5 and 4 respectively)

let the number to be added be x

there fore,

x+35/60=16/60

x=-19/60