Question

the sum of two rational number is 2 / 5 if one of them is 3 /10 find the other​

Answer 1

Answer:

1/10

Step-by-step explanation:

x+y=2/5

x=3/10 (given)

3/10+y=2/5

y=2/5-3/10

y=(4-3)/10

y=1/10

Answer 2

Step-by-step explanation:

Sum of two rational numbers = 2/5

one of the number = 3/10

let another number be 'x'

x + 3/10 = 2/5

(10x + 3)/10 = 2/5

on cross multiplication

5 ( 10x+ 3 ) = 2 × 10

50x + 15 = 20

50x = 20 - 15

50x = 5

x = 5/50

x = 1/10

so the other number is 1/10

hope it helps u......

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