Question

find a sum of the 9 and difference of 1​

Answer 1

Answer:

let the numbers be x and y

x+y=9

x-y=1

x=1+y

x+y=9

1+y+y=9

2y=8

y=4

x=1+4

=5

the nos. are 5 and 4

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Answer 2

Answer:

5 and 4

sum of number-5+4=9

substraction of number-5-4=1