What should be added to 2/1 by 3 + 2/2 by 5 to get the sum 10
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Answer:
Let the x be the number we have to add to make the sum equal to 10
x+2
3
1
+2
5
2
=10
⇒x+
3
7
+
5
12
=10
⇒x+
15
53+36
=10
⇒x=10−
15
89
=
15
150−89
=
15
61
⇒x=4
15
1
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