Arthur D. answered • 01/05/16

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x and x+3 are the numbers

x+x+3=25

2x+3=25

2x=25-3

2x=22

x=22/2

x=11

x+3=11+3=14

you can use arithmetic...

start with 12 and 13 which have a difference of only 1

subtract 1 from 12 and add 1 to 13

12-1=11

13+1=14